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;
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=$course->id&return=1&sesskey=".sesskey()."\">$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}\">{$idprovider->name}</a>";
421 if (isset($USER->username) && $USER->username == 'guest') {
422 $loggedinas = $realuserinfo.get_string('loggedinasguest').
423 " (<a href=\"$loginurl\">".get_string('login').'</a>)';
424 } else if (!empty($USER->access['rsw'][$context->path])) {
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($CFG->displayloginfailures)) {
445 if (!empty($USER->username) and $USER->username != 'guest') {
446 if ($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 $this->page->set_state(moodle_page::STATE_PRINTING_HEADER);
573 // Find the appropriate page layout file, based on $this->page->pagelayout.
574 $layoutfile = $this->page->theme->layout_file($this->page->pagelayout);
575 // Render the layout using the layout file.
576 $rendered = $this->render_page_layout($layoutfile);
578 // Slice the rendered output into header and footer.
579 $cutpos = strpos($rendered, self::MAIN_CONTENT_TOKEN);
580 if ($cutpos === false) {
581 throw new coding_exception('page layout file ' . $layoutfile .
582 ' does not contain the string "' . self::MAIN_CONTENT_TOKEN . '".');
584 $header = substr($rendered, 0, $cutpos);
585 $footer = substr($rendered, $cutpos + strlen(self::MAIN_CONTENT_TOKEN));
587 if (empty($this->contenttype)) {
588 debugging('The page layout file did not call $OUTPUT->doctype()');
589 $header = $this->doctype() . $header;
592 send_headers($this->contenttype, $this->page->cacheable);
594 $this->opencontainers->push('header/footer', $footer);
595 $this->page->set_state(moodle_page::STATE_IN_BODY);
597 return $header . $this->skip_link_target('maincontent');
601 * Renders and outputs the page layout file.
602 * @param string $layoutfile The name of the layout file
603 * @return string HTML code
605 protected function render_page_layout($layoutfile) {
606 global $CFG, $SITE, $USER;
607 // The next lines are a bit tricky. The point is, here we are in a method
608 // of a renderer class, and this object may, or may not, be the same as
609 // the global $OUTPUT object. When rendering the page layout file, we want to use
610 // this object. However, people writing Moodle code expect the current
611 // renderer to be called $OUTPUT, not $this, so define a variable called
612 // $OUTPUT pointing at $this. The same comment applies to $PAGE and $COURSE.
615 $COURSE = $this->page->course;
618 include($layoutfile);
619 $rendered = ob_get_contents();
625 * Outputs the page's footer
626 * @return string HTML fragment
628 public function footer() {
631 $output = $this->container_end_all(true);
633 $footer = $this->opencontainers->pop('header/footer');
635 if (debugging() and $DB and $DB->is_transaction_started()) {
636 // TODO: MDL-20625 print warning - transaction will be rolled back
639 // Provide some performance info if required
640 $performanceinfo = '';
641 if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
642 $perf = get_performance_info();
643 if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
644 error_log("PERF: " . $perf['txt']);
646 if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
647 $performanceinfo = $perf['html'];
650 $footer = str_replace(self::PERFORMANCE_INFO_TOKEN, $performanceinfo, $footer);
652 $footer = str_replace(self::END_HTML_TOKEN, $this->page->requires->get_end_code(), $footer);
654 $this->page->set_state(moodle_page::STATE_DONE);
656 return $output . $footer;
660 * Close all but the last open container. This is useful in places like error
661 * handling, where you want to close all the open containers (apart from <body>)
662 * before outputting the error message.
663 * @param bool $shouldbenone assert that the stack should be empty now - causes a
664 * developer debug warning if it isn't.
665 * @return string the HTML required to close any open containers inside <body>.
667 public function container_end_all($shouldbenone = false) {
668 return $this->opencontainers->pop_all_but_last($shouldbenone);
672 * Returns lang menu or '', this method also checks forcing of languages in courses.
675 public function lang_menu() {
678 if (empty($CFG->langmenu)) {
682 if ($this->page->course != SITEID and !empty($this->page->course->lang)) {
683 // do not show lang menu if language forced
687 $currlang = current_language();
688 $langs = get_string_manager()->get_list_of_translations();
690 if (count($langs) < 2) {
694 $s = new single_select($this->page->url, 'lang', $langs, $currlang, null);
695 $s->label = get_accesshide(get_string('language'));
696 $s->class = 'langmenu';
697 return $this->render($s);
701 * Output the row of editing icons for a block, as defined by the controls array.
702 * @param array $controls an array like {@link block_contents::$controls}.
703 * @return HTML fragment.
705 public function block_controls($controls) {
706 if (empty($controls)) {
709 $controlshtml = array();
710 foreach ($controls as $control) {
711 $controlshtml[] = html_writer::tag('a',
712 html_writer::empty_tag('img', array('src' => $this->pix_url($control['icon'])->out(false), 'alt' => $control['caption'])),
713 array('class' => 'icon','title' => $control['caption'], 'href' => $control['url']));
715 return html_writer::tag('div', implode('', $controlshtml), array('class' => 'commands'));
719 * Prints a nice side block with an optional header.
721 * The content is described
722 * by a {@link block_contents} object.
724 * <div id="inst{$instanceid}" class="block_{$blockname} block">
725 * <div class="header"></div>
726 * <div class="content">
728 * <div class="footer">
731 * <div class="annotation">
735 * @param block_contents $bc HTML for the content
736 * @param string $region the region the block is appearing in.
737 * @return string the HTML to be output.
739 function block(block_contents $bc, $region) {
740 $bc = clone($bc); // Avoid messing up the object passed in.
741 if (empty($bc->blockinstanceid) || !strip_tags($bc->title)) {
742 $bc->collapsible = block_contents::NOT_HIDEABLE;
744 if ($bc->collapsible == block_contents::HIDDEN) {
745 $bc->add_class('hidden');
747 if (!empty($bc->controls)) {
748 $bc->add_class('block_with_controls');
751 $skiptitle = strip_tags($bc->title);
752 if (empty($skiptitle)) {
756 $output = html_writer::tag('a', get_string('skipa', 'access', $skiptitle), array('href' => '#sb-' . $bc->skipid, 'class' => 'skip-block'));
757 $skipdest = html_writer::tag('span', '', array('id' => 'sb-' . $bc->skipid, 'class' => 'skip-block-to'));
760 $output .= html_writer::start_tag('div', $bc->attributes);
762 $controlshtml = $this->block_controls($bc->controls);
766 $title = html_writer::tag('h2', $bc->title, null);
769 if ($title || $controlshtml) {
770 $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'));
773 $output .= html_writer::start_tag('div', array('class' => 'content'));
774 if (!$title && !$controlshtml) {
775 $output .= html_writer::tag('div', '', array('class'=>'block_action notitle'));
777 $output .= $bc->content;
780 $output .= html_writer::tag('div', $bc->footer, array('class' => 'footer'));
783 $output .= html_writer::end_tag('div');
784 $output .= html_writer::end_tag('div');
786 if ($bc->annotation) {
787 $output .= html_writer::tag('div', $bc->annotation, array('class' => 'blockannotation'));
789 $output .= $skipdest;
791 $this->init_block_hider_js($bc);
796 * Calls the JS require function to hide a block.
797 * @param block_contents $bc A block_contents object
800 protected function init_block_hider_js(block_contents $bc) {
801 if (!empty($bc->attributes['id']) and $bc->collapsible != block_contents::NOT_HIDEABLE) {
802 $config = new stdClass;
803 $config->id = $bc->attributes['id'];
804 $config->title = strip_tags($bc->title);
805 $config->preference = 'block' . $bc->blockinstanceid . 'hidden';
806 $config->tooltipVisible = get_string('hideblocka', 'access', $config->title);
807 $config->tooltipHidden = get_string('showblocka', 'access', $config->title);
809 $this->page->requires->js_init_call('M.util.init_block_hider', array($config));
810 user_preference_allow_ajax_update($config->preference, PARAM_BOOL);
815 * Render the contents of a block_list.
816 * @param array $icons the icon for each item.
817 * @param array $items the content of each item.
818 * @return string HTML
820 public function list_block_contents($icons, $items) {
823 foreach ($items as $key => $string) {
824 $item = html_writer::start_tag('li', array('class' => 'r' . $row));
825 if (!empty($icons[$key])) { //test if the content has an assigned icon
826 $item .= html_writer::tag('div', $icons[$key], array('class' => 'icon column c0'));
828 $item .= html_writer::tag('div', $string, array('class' => 'column c1'));
829 $item .= html_writer::end_tag('li');
831 $row = 1 - $row; // Flip even/odd.
833 return html_writer::tag('ul', implode("\n", $lis), array('class' => 'list'));
837 * Output all the blocks in a particular region.
838 * @param string $region the name of a region on this page.
839 * @return string the HTML to be output.
841 public function blocks_for_region($region) {
842 $blockcontents = $this->page->blocks->get_content_for_region($region, $this);
845 foreach ($blockcontents as $bc) {
846 if ($bc instanceof block_contents) {
847 $output .= $this->block($bc, $region);
848 } else if ($bc instanceof block_move_target) {
849 $output .= $this->block_move_target($bc);
851 throw new coding_exception('Unexpected type of thing (' . get_class($bc) . ') found in list of block contents.');
858 * Output a place where the block that is currently being moved can be dropped.
859 * @param block_move_target $target with the necessary details.
860 * @return string the HTML to be output.
862 public function block_move_target($target) {
863 return html_writer::tag('a', html_writer::tag('span', $target->text, array('class' => 'accesshide')), array('href' => $target->url, 'class' => 'blockmovetarget'));
867 * Renders a special html link with attached action
869 * @param string|moodle_url $url
870 * @param string $text HTML fragment
871 * @param component_action $action
872 * @param array $attributes associative array of html link attributes + disabled
873 * @return HTML fragment
875 public function action_link($url, $text, component_action $action = null, array $attributes=null) {
876 if (!($url instanceof moodle_url)) {
877 $url = new moodle_url($url);
879 $link = new action_link($url, $text, $action, $attributes);
881 return $this->render($link);
885 * Implementation of action_link rendering
886 * @param action_link $link
887 * @return string HTML fragment
889 protected function render_action_link(action_link $link) {
892 // A disabled link is rendered as formatted text
893 if (!empty($link->attributes['disabled'])) {
894 // do not use div here due to nesting restriction in xhtml strict
895 return html_writer::tag('span', $link->text, array('class'=>'currentlink'));
898 $attributes = $link->attributes;
899 unset($link->attributes['disabled']);
900 $attributes['href'] = $link->url;
902 if ($link->actions) {
903 if (empty($attributes['id'])) {
904 $id = html_writer::random_id('action_link');
905 $attributes['id'] = $id;
907 $id = $attributes['id'];
909 foreach ($link->actions as $action) {
910 $this->add_action_handler($action, $id);
914 return html_writer::tag('a', $link->text, $attributes);
919 * Similar to action_link, image is used instead of the text
921 * @param string|moodle_url $url A string URL or moodel_url
922 * @param pix_icon $pixicon
923 * @param component_action $action
924 * @param array $attributes associative array of html link attributes + disabled
925 * @param bool $linktext show title next to image in link
926 * @return string HTML fragment
928 public function action_icon($url, pix_icon $pixicon, component_action $action = null, array $attributes = null, $linktext=false) {
929 if (!($url instanceof moodle_url)) {
930 $url = new moodle_url($url);
932 $attributes = (array)$attributes;
934 if (empty($attributes['class'])) {
935 // let ppl override the class via $options
936 $attributes['class'] = 'action-icon';
939 $icon = $this->render($pixicon);
942 $text = $pixicon->attributes['alt'];
947 return $this->action_link($url, $text.$icon, $action, $attributes);
951 * Print a message along with button choices for Continue/Cancel
953 * If a string or moodle_url is given instead of a single_button, method defaults to post.
955 * @param string $message The question to ask the user
956 * @param single_button|moodle_url|string $continue The single_button component representing the Continue answer. Can also be a moodle_url or string URL
957 * @param single_button|moodle_url|string $cancel The single_button component representing the Cancel answer. Can also be a moodle_url or string URL
958 * @return string HTML fragment
960 public function confirm($message, $continue, $cancel) {
961 if ($continue instanceof single_button) {
963 } else if (is_string($continue)) {
964 $continue = new single_button(new moodle_url($continue), get_string('continue'), 'post');
965 } else if ($continue instanceof moodle_url) {
966 $continue = new single_button($continue, get_string('continue'), 'post');
968 throw new coding_exception('The continue param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
971 if ($cancel instanceof single_button) {
973 } else if (is_string($cancel)) {
974 $cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
975 } else if ($cancel instanceof moodle_url) {
976 $cancel = new single_button($cancel, get_string('cancel'), 'get');
978 throw new coding_exception('The cancel param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
981 $output = $this->box_start('generalbox', 'notice');
982 $output .= html_writer::tag('p', $message);
983 $output .= html_writer::tag('div', $this->render($continue) . $this->render($cancel), array('class' => 'buttons'));
984 $output .= $this->box_end();
989 * Returns a form with a single button.
991 * @param string|moodle_url $url
992 * @param string $label button text
993 * @param string $method get or post submit method
994 * @param array $options associative array {disabled, title, etc.}
995 * @return string HTML fragment
997 public function single_button($url, $label, $method='post', array $options=null) {
998 if (!($url instanceof moodle_url)) {
999 $url = new moodle_url($url);
1001 $button = new single_button($url, $label, $method);
1003 foreach ((array)$options as $key=>$value) {
1004 if (array_key_exists($key, $button)) {
1005 $button->$key = $value;
1009 return $this->render($button);
1013 * Internal implementation of single_button rendering
1014 * @param single_button $button
1015 * @return string HTML fragment
1017 protected function render_single_button(single_button $button) {
1018 $attributes = array('type' => 'submit',
1019 'value' => $button->label,
1020 'disabled' => $button->disabled ? 'disabled' : null,
1021 'title' => $button->tooltip);
1023 if ($button->actions) {
1024 $id = html_writer::random_id('single_button');
1025 $attributes['id'] = $id;
1026 foreach ($button->actions as $action) {
1027 $this->add_action_handler($action, $id);
1031 // first the input element
1032 $output = html_writer::empty_tag('input', $attributes);
1034 // then hidden fields
1035 $params = $button->url->params();
1036 if ($button->method === 'post') {
1037 $params['sesskey'] = sesskey();
1039 foreach ($params as $var => $val) {
1040 $output .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $var, 'value' => $val));
1043 // then div wrapper for xhtml strictness
1044 $output = html_writer::tag('div', $output);
1046 // now the form itself around it
1047 $url = $button->url->out_omit_querystring(); // url without params
1049 $url = '#'; // there has to be always some action
1051 $attributes = array('method' => $button->method,
1053 'id' => $button->formid);
1054 $output = html_writer::tag('form', $output, $attributes);
1056 // and finally one more wrapper with class
1057 return html_writer::tag('div', $output, array('class' => $button->class));
1061 * Returns a form with a single select widget.
1062 * @param moodle_url $url form action target, includes hidden fields
1063 * @param string $name name of selection field - the changing parameter in url
1064 * @param array $options list of options
1065 * @param string $selected selected element
1066 * @param array $nothing
1067 * @param string $formid
1068 * @return string HTML fragment
1070 public function single_select($url, $name, array $options, $selected='', $nothing=array(''=>'choosedots'), $formid=null) {
1071 if (!($url instanceof moodle_url)) {
1072 $url = new moodle_url($url);
1074 $select = new single_select($url, $name, $options, $selected, $nothing, $formid);
1076 return $this->render($select);
1080 * Internal implementation of single_select rendering
1081 * @param single_select $select
1082 * @return string HTML fragment
1084 protected function render_single_select(single_select $select) {
1085 $select = clone($select);
1086 if (empty($select->formid)) {
1087 $select->formid = html_writer::random_id('single_select_f');
1091 $params = $select->url->params();
1092 if ($select->method === 'post') {
1093 $params['sesskey'] = sesskey();
1095 foreach ($params as $name=>$value) {
1096 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$value));
1099 if (empty($select->attributes['id'])) {
1100 $select->attributes['id'] = html_writer::random_id('single_select');
1103 if ($select->disabled) {
1104 $select->attributes['disabled'] = 'disabled';
1107 if ($select->tooltip) {
1108 $select->attributes['title'] = $select->tooltip;
1111 if ($select->label) {
1112 $output .= html_writer::label($select->label, $select->attributes['id']);
1115 if ($select->helpicon instanceof help_icon) {
1116 $output .= $this->render($select->helpicon);
1117 } else if ($select->helpicon instanceof old_help_icon) {
1118 $output .= $this->render($select->helpicon);
1121 $output .= html_writer::select($select->options, $select->name, $select->selected, $select->nothing, $select->attributes);
1123 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1124 $output .= html_writer::tag('noscript', $go, array('style'=>'inline'));
1126 $nothing = empty($select->nothing) ? false : key($select->nothing);
1127 $this->page->requires->js_init_call('M.util.init_select_autosubmit', array($select->formid, $select->attributes['id'], $nothing));
1129 // then div wrapper for xhtml strictness
1130 $output = html_writer::tag('div', $output);
1132 // now the form itself around it
1133 $formattributes = array('method' => $select->method,
1134 'action' => $select->url->out_omit_querystring(),
1135 'id' => $select->formid);
1136 $output = html_writer::tag('form', $output, $formattributes);
1138 // and finally one more wrapper with class
1139 return html_writer::tag('div', $output, array('class' => $select->class));
1143 * Returns a form with a url select widget.
1144 * @param array $urls list of urls - array('/course/view.php?id=1'=>'Frontpage', ....)
1145 * @param string $selected selected element
1146 * @param array $nothing
1147 * @param string $formid
1148 * @return string HTML fragment
1150 public function url_select(array $urls, $selected, $nothing=array(''=>'choosedots'), $formid=null) {
1151 $select = new url_select($urls, $selected, $nothing, $formid);
1152 return $this->render($select);
1156 * Internal implementation of url_select rendering
1157 * @param single_select $select
1158 * @return string HTML fragment
1160 protected function render_url_select(url_select $select) {
1163 $select = clone($select);
1164 if (empty($select->formid)) {
1165 $select->formid = html_writer::random_id('url_select_f');
1168 if (empty($select->attributes['id'])) {
1169 $select->attributes['id'] = html_writer::random_id('url_select');
1172 if ($select->disabled) {
1173 $select->attributes['disabled'] = 'disabled';
1176 if ($select->tooltip) {
1177 $select->attributes['title'] = $select->tooltip;
1182 if ($select->label) {
1183 $output .= html_writer::label($select->label, $select->attributes['id']);
1186 if ($select->helpicon instanceof help_icon) {
1187 $output .= $this->render($select->helpicon);
1188 } else if ($select->helpicon instanceof old_help_icon) {
1189 $output .= $this->render($select->helpicon);
1192 // For security reasons, the script course/jumpto.php requires URL starting with '/'. To keep
1193 // backward compatibility, we are removing heading $CFG->wwwroot from URLs here.
1195 foreach ($select->urls as $k=>$v) {
1197 // optgroup structure
1198 foreach ($v as $optgrouptitle => $optgroupoptions) {
1199 foreach ($optgroupoptions as $optionurl => $optiontitle) {
1200 if (empty($optionurl)) {
1201 $safeoptionurl = '';
1202 } else if (strpos($optionurl, $CFG->wwwroot.'/') === 0) {
1203 // debugging('URLs passed to url_select should be in local relative form - please fix the code.', DEBUG_DEVELOPER);
1204 $safeoptionurl = str_replace($CFG->wwwroot, '', $optionurl);
1205 } else if (strpos($optionurl, '/') !== 0) {
1206 debugging("Invalid url_select urls parameter inside optgroup: url '$optionurl' is not local relative url!");
1209 $safeoptionurl = $optionurl;
1211 $urls[$k][$optgrouptitle][$safeoptionurl] = $optiontitle;
1215 // plain list structure
1217 // nothing selected option
1218 } else if (strpos($k, $CFG->wwwroot.'/') === 0) {
1219 $k = str_replace($CFG->wwwroot, '', $k);
1220 } else if (strpos($k, '/') !== 0) {
1221 debugging("Invalid url_select urls parameter: url '$k' is not local relative url!");
1227 $selected = $select->selected;
1228 if (!empty($selected)) {
1229 if (strpos($select->selected, $CFG->wwwroot.'/') === 0) {
1230 $selected = str_replace($CFG->wwwroot, '', $selected);
1231 } else if (strpos($selected, '/') !== 0) {
1232 debugging("Invalid value of parameter 'selected': url '$selected' is not local relative url!");
1236 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
1237 $output .= html_writer::select($urls, 'jump', $selected, $select->nothing, $select->attributes);
1239 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1240 $output .= html_writer::tag('noscript', $go, array('style'=>'inline'));
1242 $nothing = empty($select->nothing) ? false : key($select->nothing);
1243 $output .= $this->page->requires->js_init_call('M.util.init_url_select', array($select->formid, $select->attributes['id'], $nothing));
1245 // then div wrapper for xhtml strictness
1246 $output = html_writer::tag('div', $output);
1248 // now the form itself around it
1249 $formattributes = array('method' => 'post',
1250 'action' => new moodle_url('/course/jumpto.php'),
1251 'id' => $select->formid);
1252 $output = html_writer::tag('form', $output, $formattributes);
1254 // and finally one more wrapper with class
1255 return html_writer::tag('div', $output, array('class' => $select->class));
1259 * Returns a string containing a link to the user documentation.
1260 * Also contains an icon by default. Shown to teachers and admin only.
1261 * @param string $path The page link after doc root and language, no leading slash.
1262 * @param string $text The text to be displayed for the link
1265 public function doc_link($path, $text) {
1268 $icon = $this->pix_icon('docs', $text, 'moodle', array('class'=>'iconhelp'));
1270 $url = new moodle_url(get_docs_url($path));
1272 $attributes = array('href'=>$url);
1273 if (!empty($CFG->doctonewwindow)) {
1274 $attributes['id'] = $this->add_action_handler(new popup_action('click', $url));
1277 return html_writer::tag('a', $icon.$text, $attributes);
1282 * @param string $pix short pix name
1283 * @param string $alt mandatory alt attribute
1284 * @param strin $component standard compoennt name like 'moodle', 'mod_form', etc.
1285 * @param array $attributes htm lattributes
1286 * @return string HTML fragment
1288 public function pix_icon($pix, $alt, $component='moodle', array $attributes = null) {
1289 $icon = new pix_icon($pix, $alt, $component, $attributes);
1290 return $this->render($icon);
1295 * @param pix_icon $icon
1296 * @return string HTML fragment
1298 protected function render_pix_icon(pix_icon $icon) {
1299 $attributes = $icon->attributes;
1300 $attributes['src'] = $this->pix_url($icon->pix, $icon->component);
1301 return html_writer::empty_tag('img', $attributes);
1305 * Produces the html that represents this rating in the UI
1306 * @param $page the page object on which this rating will appear
1308 function render_rating(rating $rating) {
1310 static $havesetupjavascript = false;
1312 if( $rating->settings->aggregationmethod == RATING_AGGREGATE_NONE ){
1313 return null;//ratings are turned off
1316 $useajax = !empty($CFG->enableajax);
1318 //include required Javascript
1319 if( !$havesetupjavascript && $useajax ) {
1320 $this->page->requires->js_init_call('M.core_rating.init');
1321 $havesetupjavascript = true;
1324 //check the item we're rating was created in the assessable time window
1325 $inassessablewindow = true;
1326 if ( $rating->settings->assesstimestart && $rating->settings->assesstimefinish ) {
1327 if ($rating->itemtimecreated < $rating->settings->assesstimestart || $rating->itemtimecreated > $rating->settings->assesstimefinish) {
1328 $inassessablewindow = false;
1332 $strrate = get_string("rate", "rating");
1333 $ratinghtml = ''; //the string we'll return
1335 //permissions check - can they view the aggregate?
1336 $canviewaggregate = false;
1338 //if its the current user's item and they have permission to view the aggregate on their own items
1339 if ( $rating->itemuserid==$USER->id && $rating->settings->permissions->view && $rating->settings->pluginpermissions->view) {
1340 $canviewaggregate = true;
1343 //if the item doesnt belong to anyone or its another user's items and they can see the aggregate on items they don't own
1344 //Note that viewany doesnt mean you can see the aggregate or ratings of your own items
1345 if ( (empty($rating->itemuserid) or $rating->itemuserid!=$USER->id) && $rating->settings->permissions->viewany && $rating->settings->pluginpermissions->viewany ) {
1346 $canviewaggregate = true;
1349 if ($canviewaggregate==true) {
1350 $aggregatelabel = '';
1351 switch ($rating->settings->aggregationmethod) {
1352 case RATING_AGGREGATE_AVERAGE :
1353 $aggregatelabel .= get_string("aggregateavg", "forum");
1355 case RATING_AGGREGATE_COUNT :
1356 $aggregatelabel .= get_string("aggregatecount", "forum");
1358 case RATING_AGGREGATE_MAXIMUM :
1359 $aggregatelabel .= get_string("aggregatemax", "forum");
1361 case RATING_AGGREGATE_MINIMUM :
1362 $aggregatelabel .= get_string("aggregatemin", "forum");
1364 case RATING_AGGREGATE_SUM :
1365 $aggregatelabel .= get_string("aggregatesum", "forum");
1369 //$scalemax = 0;//no longer displaying scale max
1372 //only display aggregate if aggregation method isn't COUNT
1373 if ($rating->aggregate && $rating->settings->aggregationmethod!= RATING_AGGREGATE_COUNT) {
1374 if ($rating->settings->aggregationmethod!= RATING_AGGREGATE_SUM && is_array($rating->settings->scale->scaleitems)) {
1375 $aggregatestr .= $rating->settings->scale->scaleitems[round($rating->aggregate)];//round aggregate as we're using it as an index
1377 else { //aggregation is SUM or the scale is numeric
1378 $aggregatestr .= round($rating->aggregate,1);
1381 $aggregatestr = ' - ';
1384 $countstr = html_writer::start_tag('span', array('id'=>"ratingcount{$rating->itemid}"));
1385 if ($rating->count>0) {
1386 $countstr .= "({$rating->count})";
1388 $countstr .= html_writer::end_tag('span');
1390 //$aggregatehtml = "{$ratingstr} / $scalemax ({$rating->count}) ";
1391 $aggregatehtml = "<span id='ratingaggregate{$rating->itemid}'>{$aggregatestr}</span> $countstr ";
1393 if ($rating->settings->permissions->viewall && $rating->settings->pluginpermissions->viewall) {
1394 $url = "/rating/index.php?contextid={$rating->context->id}&itemid={$rating->itemid}&scaleid={$rating->settings->scale->id}";
1395 $nonpopuplink = new moodle_url($url);
1396 $popuplink = new moodle_url("$url&popup=1");
1398 $action = new popup_action('click', $popuplink, 'ratings', array('height' => 400, 'width' => 600));
1399 $ratinghtml .= $aggregatelabel.get_string('labelsep', 'langconfig').$this->action_link($nonpopuplink, $aggregatehtml, $action);
1401 $ratinghtml .= $aggregatelabel.get_string('labelsep', 'langconfig').$aggregatehtml;
1406 //if the item doesn't belong to the current user, the user has permission to rate
1407 //and we're within the assessable period
1408 if ($rating->itemuserid!=$USER->id
1409 && $rating->settings->permissions->rate
1410 && $rating->settings->pluginpermissions->rate
1411 && $inassessablewindow) {
1413 //start the rating form
1414 $formstart = html_writer::start_tag('form',
1415 array('id'=>"postrating{$rating->itemid}", 'class'=>'postratingform', 'method'=>'post', 'action'=>"{$CFG->wwwroot}/rating/rate.php"));
1417 $formstart .= html_writer::start_tag('div', array('class'=>'ratingform'));
1419 //add the hidden inputs
1421 $attributes = array('type'=>'hidden', 'class'=>'ratinginput', 'name'=>'contextid', 'value'=>$rating->context->id);
1422 $formstart .= html_writer::empty_tag('input', $attributes);
1424 $attributes['name'] = 'itemid';
1425 $attributes['value'] = $rating->itemid;
1426 $formstart .= html_writer::empty_tag('input', $attributes);
1428 $attributes['name'] = 'scaleid';
1429 $attributes['value'] = $rating->settings->scale->id;
1430 $formstart .= html_writer::empty_tag('input', $attributes);
1432 $attributes['name'] = 'returnurl';
1433 $attributes['value'] = $rating->settings->returnurl;
1434 $formstart .= html_writer::empty_tag('input', $attributes);
1436 $attributes['name'] = 'rateduserid';
1437 $attributes['value'] = $rating->itemuserid;
1438 $formstart .= html_writer::empty_tag('input', $attributes);
1440 $attributes['name'] = 'aggregation';
1441 $attributes['value'] = $rating->settings->aggregationmethod;
1442 $formstart .= html_writer::empty_tag('input', $attributes);
1444 $attributes['name'] = 'sesskey';
1445 $attributes['value'] = sesskey();;
1446 $formstart .= html_writer::empty_tag('input', $attributes);
1448 if (empty($ratinghtml)) {
1449 $ratinghtml .= $strrate.': ';
1452 $ratinghtml = $formstart.$ratinghtml;
1454 //generate an array of values for numeric scales
1455 $scalearray = $rating->settings->scale->scaleitems;
1456 if (!is_array($scalearray)) { //almost certainly a numerical scale
1457 $intscalearray = intval($scalearray);//just in case they've passed "5" instead of 5
1458 $scalearray = array();
1459 if( is_int($intscalearray) && $intscalearray>0 ) {
1460 for($i=0; $i<=$rating->settings->scale->scaleitems; $i++) {
1461 $scalearray[$i] = $i;
1466 $scalearray = array(RATING_UNSET_RATING => $strrate.'...') + $scalearray;
1467 $ratinghtml .= html_writer::select($scalearray, 'rating', $rating->rating, false, array('class'=>'postratingmenu ratinginput','id'=>'menurating'.$rating->itemid));
1469 //output submit button
1471 $ratinghtml .= html_writer::start_tag('span', array('class'=>"ratingsubmit"));
1473 $attributes = array('type'=>'submit', 'class'=>'postratingmenusubmit', 'id'=>'postratingsubmit'.$rating->itemid, 'value'=>s(get_string('rate', 'rating')));
1474 $ratinghtml .= html_writer::empty_tag('input', $attributes);
1476 if (is_array($rating->settings->scale->scaleitems)) {
1477 $ratinghtml .= $this->help_icon_scale($rating->settings->scale->courseid, $rating->settings->scale);
1479 $ratinghtml .= html_writer::end_tag('span');
1480 $ratinghtml .= html_writer::end_tag('div');
1481 $ratinghtml .= html_writer::end_tag('form');
1488 * Centered heading with attached help button (same title text)
1489 * and optional icon attached
1490 * @param string $text A heading text
1491 * @param string $helpidentifier The keyword that defines a help page
1492 * @param string $component component name
1493 * @param string|moodle_url $icon
1494 * @param string $iconalt icon alt text
1495 * @return string HTML fragment
1497 public function heading_with_help($text, $helpidentifier, $component='moodle', $icon='', $iconalt='') {
1500 $image = $this->pix_icon($icon, $iconalt, $component, array('class'=>'icon'));
1504 if ($helpidentifier) {
1505 $help = $this->help_icon($helpidentifier, $component);
1508 return $this->heading($image.$text.$help, 2, 'main help');
1512 * Print a help icon.
1514 * @deprecated since Moodle 2.0
1515 * @param string $page The keyword that defines a help page
1516 * @param string $title A descriptive text for accessibility only
1517 * @param string $component component name
1518 * @param string|bool $linktext true means use $title as link text, string means link text value
1519 * @return string HTML fragment
1521 public function old_help_icon($helpidentifier, $title, $component = 'moodle', $linktext = '') {
1522 debugging('The method old_help_icon() is deprecated, please fix the code and use help_icon() method instead', DEBUG_DEVELOPER);
1523 $icon = new old_help_icon($helpidentifier, $title, $component);
1524 if ($linktext === true) {
1525 $icon->linktext = $title;
1526 } else if (!empty($linktext)) {
1527 $icon->linktext = $linktext;
1529 return $this->render($icon);
1533 * Implementation of user image rendering.
1534 * @param help_icon $helpicon
1535 * @return string HTML fragment
1537 protected function render_old_help_icon(old_help_icon $helpicon) {
1540 // first get the help image icon
1541 $src = $this->pix_url('help');
1543 if (empty($helpicon->linktext)) {
1544 $alt = $helpicon->title;
1546 $alt = get_string('helpwiththis');
1549 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1550 $output = html_writer::empty_tag('img', $attributes);
1552 // add the link text if given
1553 if (!empty($helpicon->linktext)) {
1554 // the spacing has to be done through CSS
1555 $output .= $helpicon->linktext;
1558 // now create the link around it
1559 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->helpidentifier, 'lang'=>current_language()));
1561 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1562 $title = get_string('helpprefix2', '', trim($helpicon->title, ". \t"));
1564 $attributes = array('href'=>$url, 'title'=>$title);
1565 $id = html_writer::random_id('helpicon');
1566 $attributes['id'] = $id;
1567 $output = html_writer::tag('a', $output, $attributes);
1569 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1572 return html_writer::tag('span', $output, array('class' => 'helplink'));
1576 * Print a help icon.
1578 * @param string $identifier The keyword that defines a help page
1579 * @param string $component component name
1580 * @param string|bool $linktext true means use $title as link text, string means link text value
1581 * @return string HTML fragment
1583 public function help_icon($identifier, $component = 'moodle', $linktext = '') {
1584 $icon = new help_icon($identifier, $component);
1585 $icon->diag_strings();
1586 if ($linktext === true) {
1587 $icon->linktext = get_string($icon->identifier, $icon->component);
1588 } else if (!empty($linktext)) {
1589 $icon->linktext = $linktext;
1591 return $this->render($icon);
1595 * Implementation of user image rendering.
1596 * @param help_icon $helpicon
1597 * @return string HTML fragment
1599 protected function render_help_icon(help_icon $helpicon) {
1602 // first get the help image icon
1603 $src = $this->pix_url('help');
1605 $title = get_string($helpicon->identifier, $helpicon->component);
1607 if (empty($helpicon->linktext)) {
1610 $alt = get_string('helpwiththis');
1613 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1614 $output = html_writer::empty_tag('img', $attributes);
1616 // add the link text if given
1617 if (!empty($helpicon->linktext)) {
1618 // the spacing has to be done through CSS
1619 $output .= $helpicon->linktext;
1622 // now create the link around it
1623 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->identifier, 'lang'=>current_language()));
1625 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1626 $title = get_string('helpprefix2', '', trim($title, ". \t"));
1628 $attributes = array('href'=>$url, 'title'=>$title);
1629 $id = html_writer::random_id('helpicon');
1630 $attributes['id'] = $id;
1631 $output = html_writer::tag('a', $output, $attributes);
1633 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1636 return html_writer::tag('span', $output, array('class' => 'helplink'));
1640 * Print scale help icon.
1642 * @param int $courseid
1643 * @param object $scale instance
1644 * @return string HTML fragment
1646 public function help_icon_scale($courseid, stdClass $scale) {
1649 $title = get_string('helpprefix2', '', $scale->name) .' ('.get_string('newwindow').')';
1651 $icon = $this->pix_icon('help', get_string('scales'), 'moodle', array('class'=>'iconhelp'));
1653 $link = new moodle_url('/course/scales.php', array('id' => $courseid, 'list' => true, 'scaleid' => $scale->id));
1654 $action = new popup_action('click', $link, 'ratingscale');
1656 return html_writer::tag('span', $this->action_link($link, $icon, $action), array('class' => 'helplink'));
1660 * Creates and returns a spacer image with optional line break.
1662 * @param array $attributes
1664 * @return string HTML fragment
1666 public function spacer(array $attributes = null, $br = false) {
1667 $attributes = (array)$attributes;
1668 if (empty($attributes['width'])) {
1669 $attributes['width'] = 1;
1671 if (empty($options['height'])) {
1672 $attributes['height'] = 1;
1674 $attributes['class'] = 'spacer';
1676 $output = $this->pix_icon('spacer', '', 'moodle', $attributes);
1679 $output .= '<br />';
1686 * Print the specified user's avatar.
1688 * User avatar may be obtained in two ways:
1690 * // Option 1: (shortcut for simple cases, preferred way)
1691 * // $user has come from the DB and has fields id, picture, imagealt, firstname and lastname
1692 * $OUTPUT->user_picture($user, array('popup'=>true));
1695 * $userpic = new user_picture($user);
1696 * // Set properties of $userpic
1697 * $userpic->popup = true;
1698 * $OUTPUT->render($userpic);
1701 * @param object Object with at least fields id, picture, imagealt, firstname, lastname
1702 * If any of these are missing, the database is queried. Avoid this
1703 * if at all possible, particularly for reports. It is very bad for performance.
1704 * @param array $options associative array with user picture options, used only if not a user_picture object,
1706 * - courseid=$this->page->course->id (course id of user profile in link)
1707 * - size=35 (size of image)
1708 * - link=true (make image clickable - the link leads to user profile)
1709 * - popup=false (open in popup)
1710 * - alttext=true (add image alt attribute)
1711 * - class = image class attribute (default 'userpicture')
1712 * @return string HTML fragment
1714 public function user_picture(stdClass $user, array $options = null) {
1715 $userpicture = new user_picture($user);
1716 foreach ((array)$options as $key=>$value) {
1717 if (array_key_exists($key, $userpicture)) {
1718 $userpicture->$key = $value;
1721 return $this->render($userpicture);
1725 * Internal implementation of user image rendering.
1726 * @param user_picture $userpicture
1729 protected function render_user_picture(user_picture $userpicture) {
1732 $user = $userpicture->user;
1734 if ($userpicture->alttext) {
1735 if (!empty($user->imagealt)) {
1736 $alt = $user->imagealt;
1738 $alt = get_string('pictureof', '', fullname($user));
1744 if (empty($userpicture->size)) {
1747 } else if ($userpicture->size === true or $userpicture->size == 1) {
1750 } else if ($userpicture->size >= 50) {
1752 $size = $userpicture->size;
1755 $size = $userpicture->size;
1758 $class = $userpicture->class;
1760 if ($user->picture == 1) {
1761 $usercontext = get_context_instance(CONTEXT_USER, $user->id);
1762 $src = moodle_url::make_pluginfile_url($usercontext->id, 'user', 'icon', NULL, '/', $file);
1764 } else if ($user->picture == 2) {
1765 //TODO: gravatar user icon support
1767 } else { // Print default user pictures (use theme version if available)
1768 $class .= ' defaultuserpic';
1769 $src = $this->pix_url('u/' . $file);
1772 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>$class, 'width'=>$size, 'height'=>$size);
1774 // get the image html output fisrt
1775 $output = html_writer::empty_tag('img', $attributes);;
1777 // then wrap it in link if needed
1778 if (!$userpicture->link) {
1782 if (empty($userpicture->courseid)) {
1783 $courseid = $this->page->course->id;
1785 $courseid = $userpicture->courseid;
1788 if ($courseid == SITEID) {
1789 $url = new moodle_url('/user/profile.php', array('id' => $user->id));
1791 $url = new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $courseid));
1794 $attributes = array('href'=>$url);
1796 if ($userpicture->popup) {
1797 $id = html_writer::random_id('userpicture');
1798 $attributes['id'] = $id;
1799 $this->add_action_handler(new popup_action('click', $url), $id);
1802 return html_writer::tag('a', $output, $attributes);
1806 * Internal implementation of file tree viewer items rendering.
1810 public function htmllize_file_tree($dir) {
1811 if (empty($dir['subdirs']) and empty($dir['files'])) {
1815 foreach ($dir['subdirs'] as $subdir) {
1816 $result .= '<li>'.s($subdir['dirname']).' '.$this->htmllize_file_tree($subdir).'</li>';
1818 foreach ($dir['files'] as $file) {
1819 $filename = $file->get_filename();
1820 $result .= '<li><span>'.html_writer::link($file->fileurl, $filename).'</span></li>';
1827 * Print the file picker
1830 * $OUTPUT->file_picker($options);
1833 * @param array $options associative array with file manager options
1837 * client_id=>uniqid(),
1838 * acepted_types=>'*',
1839 * return_types=>FILE_INTERNAL,
1840 * context=>$PAGE->context
1841 * @return string HTML fragment
1843 public function file_picker($options) {
1844 $fp = new file_picker($options);
1845 return $this->render($fp);
1848 * Internal implementation of file picker rendering.
1849 * @param file_picker $fp
1852 public function render_file_picker(file_picker $fp) {
1853 global $CFG, $OUTPUT, $USER;
1854 $options = $fp->options;
1855 $client_id = $options->client_id;
1856 $strsaved = get_string('filesaved', 'repository');
1857 $straddfile = get_string('openpicker', 'repository');
1858 $strloading = get_string('loading', 'repository');
1859 $icon_progress = $OUTPUT->pix_icon('i/loading_small', $strloading).'';
1861 $currentfile = $options->currentfile;
1862 if (empty($currentfile)) {
1863 $currentfile = get_string('nofilesattached', 'repository');
1866 <div class="filemanager-loading mdl-align" id='filepicker-loading-{$client_id}'>
1869 <div id="filepicker-wrapper-{$client_id}" class="mdl-left" style="display:none">
1871 <button id="filepicker-button-{$client_id}">$straddfile</button>
1874 if ($options->env != 'url') {
1876 <div id="file_info_{$client_id}" class="mdl-left filepicker-filelist">$currentfile</div>
1884 * Prints the 'Update this Modulename' button that appears on module pages.
1886 * @param string $cmid the course_module id.
1887 * @param string $modulename the module name, eg. "forum", "quiz" or "workshop"
1888 * @return string the HTML for the button, if this user has permission to edit it, else an empty string.
1890 public function update_module_button($cmid, $modulename) {
1892 if (has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_MODULE, $cmid))) {
1893 $modulename = get_string('modulename', $modulename);
1894 $string = get_string('updatethis', '', $modulename);
1895 $url = new moodle_url("$CFG->wwwroot/course/mod.php", array('update' => $cmid, 'return' => true, 'sesskey' => sesskey()));
1896 return $this->single_button($url, $string);
1903 * Prints a "Turn editing on/off" button in a form.
1904 * @param moodle_url $url The URL + params to send through when clicking the button
1905 * @return string HTML the button
1907 public function edit_button(moodle_url $url) {
1909 $url->param('sesskey', sesskey());
1910 if ($this->page->user_is_editing()) {
1911 $url->param('edit', 'off');
1912 $editstring = get_string('turneditingoff');
1914 $url->param('edit', 'on');
1915 $editstring = get_string('turneditingon');
1918 return $this->single_button($url, $editstring);
1922 * Prints a simple button to close a window
1924 * @param string $text The lang string for the button's label (already output from get_string())
1925 * @return string html fragment
1927 public function close_window_button($text='') {
1929 $text = get_string('closewindow');
1931 $button = new single_button(new moodle_url('#'), $text, 'get');
1932 $button->add_action(new component_action('click', 'close_window'));
1934 return $this->container($this->render($button), 'closewindow');
1938 * Output an error message. By default wraps the error message in <span class="error">.
1939 * If the error message is blank, nothing is output.
1940 * @param string $message the error message.
1941 * @return string the HTML to output.
1943 public function error_text($message) {
1944 if (empty($message)) {
1947 return html_writer::tag('span', $message, array('class' => 'error'));
1951 * Do not call this function directly.
1953 * To terminate the current script with a fatal error, call the {@link print_error}
1954 * function, or throw an exception. Doing either of those things will then call this
1955 * function to display the error, before terminating the execution.
1957 * @param string $message The message to output
1958 * @param string $moreinfourl URL where more info can be found about the error
1959 * @param string $link Link for the Continue button
1960 * @param array $backtrace The execution backtrace
1961 * @param string $debuginfo Debugging information
1962 * @return string the HTML to output.
1964 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
1969 if ($this->has_started()) {
1970 // we can not always recover properly here, we have problems with output buffering,
1971 // html tables, etc.
1972 $output .= $this->opencontainers->pop_all_but_last();
1975 // It is really bad if library code throws exception when output buffering is on,
1976 // because the buffered text would be printed before our start of page.
1977 // NOTE: this hack might be behave unexpectedly in case output buffering is enabled in PHP.ini
1978 while (ob_get_level() > 0) {
1979 $obbuffer .= ob_get_clean();
1982 // Header not yet printed
1983 if (isset($_SERVER['SERVER_PROTOCOL'])) {
1984 // server protocol should be always present, because this render
1985 // can not be used from command line or when outputting custom XML
1986 @header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
1988 $this->page->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
1989 $this->page->set_url('/'); // no url
1990 //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
1991 $this->page->set_title(get_string('error'));
1992 $this->page->set_heading($this->page->course->fullname);
1993 $output .= $this->header();
1996 $message = '<p class="errormessage">' . $message . '</p>'.
1997 '<p class="errorcode"><a href="' . $moreinfourl . '">' .
1998 get_string('moreinformation') . '</a></p>';
1999 $output .= $this->box($message, 'errorbox');
2001 if (debugging('', DEBUG_DEVELOPER)) {
2002 if (!empty($debuginfo)) {
2003 $debuginfo = s($debuginfo); // removes all nasty JS
2004 $debuginfo = str_replace("\n", '<br />', $debuginfo); // keep newlines
2005 $output .= $this->notification('<strong>Debug info:</strong> '.$debuginfo, 'notifytiny');
2007 if (!empty($backtrace)) {
2008 $output .= $this->notification('<strong>Stack trace:</strong> '.format_backtrace($backtrace), 'notifytiny');
2010 if ($obbuffer !== '' ) {
2011 $output .= $this->notification('<strong>Output buffer:</strong> '.s($obbuffer), 'notifytiny');
2015 if (!empty($link)) {
2016 $output .= $this->continue_button($link);
2019 $output .= $this->footer();
2021 // Padding to encourage IE to display our error page, rather than its own.
2022 $output .= str_repeat(' ', 512);
2028 * Output a notification (that is, a status message about something that has
2031 * @param string $message the message to print out
2032 * @param string $classes normally 'notifyproblem' or 'notifysuccess'.
2033 * @return string the HTML to output.
2035 public function notification($message, $classes = 'notifyproblem') {
2036 return html_writer::tag('div', clean_text($message), array('class' => renderer_base::prepare_classes($classes)));
2040 * Print a continue button that goes to a particular URL.
2042 * @param string|moodle_url $url The url the button goes to.
2043 * @return string the HTML to output.
2045 public function continue_button($url) {
2046 if (!($url instanceof moodle_url)) {
2047 $url = new moodle_url($url);
2049 $button = new single_button($url, get_string('continue'), 'get');
2050 $button->class = 'continuebutton';
2052 return $this->render($button);
2056 * Prints a single paging bar to provide access to other pages (usually in a search)
2058 * @param int $totalcount The total number of entries available to be paged through
2059 * @param int $page The page you are currently viewing
2060 * @param int $perpage The number of entries that should be shown per page
2061 * @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
2062 * @param string $pagevar name of page parameter that holds the page number
2063 * @return string the HTML to output.
2065 public function paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
2066 $pb = new paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar);
2067 return $this->render($pb);
2071 * Internal implementation of paging bar rendering.
2072 * @param paging_bar $pagingbar
2075 protected function render_paging_bar(paging_bar $pagingbar) {
2077 $pagingbar = clone($pagingbar);
2078 $pagingbar->prepare($this, $this->page, $this->target);
2080 if ($pagingbar->totalcount > $pagingbar->perpage) {
2081 $output .= get_string('page') . ':';
2083 if (!empty($pagingbar->previouslink)) {
2084 $output .= ' (' . $pagingbar->previouslink . ') ';
2087 if (!empty($pagingbar->firstlink)) {
2088 $output .= ' ' . $pagingbar->firstlink . ' ...';
2091 foreach ($pagingbar->pagelinks as $link) {
2092 $output .= "  $link";
2095 if (!empty($pagingbar->lastlink)) {
2096 $output .= ' ...' . $pagingbar->lastlink . ' ';
2099 if (!empty($pagingbar->nextlink)) {
2100 $output .= '  (' . $pagingbar->nextlink . ')';
2104 return html_writer::tag('div', $output, array('class' => 'paging'));
2108 * Output the place a skip link goes to.
2109 * @param string $id The target name from the corresponding $PAGE->requires->skip_link_to($target) call.
2110 * @return string the HTML to output.
2112 public function skip_link_target($id = null) {
2113 return html_writer::tag('span', '', array('id' => $id));
2118 * @param string $text The text of the heading
2119 * @param int $level The level of importance of the heading. Defaulting to 2
2120 * @param string $classes A space-separated list of CSS classes
2121 * @param string $id An optional ID
2122 * @return string the HTML to output.
2124 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2125 $level = (integer) $level;
2126 if ($level < 1 or $level > 6) {
2127 throw new coding_exception('Heading level must be an integer between 1 and 6.');
2129 return html_writer::tag('h' . $level, $text, array('id' => $id, 'class' => renderer_base::prepare_classes($classes)));
2134 * @param string $contents The contents of the box
2135 * @param string $classes A space-separated list of CSS classes
2136 * @param string $id An optional ID
2137 * @return string the HTML to output.
2139 public function box($contents, $classes = 'generalbox', $id = null) {
2140 return $this->box_start($classes, $id) . $contents . $this->box_end();
2144 * Outputs the opening section of a box.
2145 * @param string $classes A space-separated list of CSS classes
2146 * @param string $id An optional ID
2147 * @return string the HTML to output.
2149 public function box_start($classes = 'generalbox', $id = null) {
2150 $this->opencontainers->push('box', html_writer::end_tag('div'));
2151 return html_writer::start_tag('div', array('id' => $id,
2152 'class' => 'box ' . renderer_base::prepare_classes($classes)));
2156 * Outputs the closing section of a box.
2157 * @return string the HTML to output.
2159 public function box_end() {
2160 return $this->opencontainers->pop('box');
2164 * Outputs a container.
2165 * @param string $contents The contents of the box
2166 * @param string $classes A space-separated list of CSS classes
2167 * @param string $id An optional ID
2168 * @return string the HTML to output.
2170 public function container($contents, $classes = null, $id = null) {
2171 return $this->container_start($classes, $id) . $contents . $this->container_end();
2175 * Outputs the opening section of a container.
2176 * @param string $classes A space-separated list of CSS classes
2177 * @param string $id An optional ID
2178 * @return string the HTML to output.
2180 public function container_start($classes = null, $id = null) {
2181 $this->opencontainers->push('container', html_writer::end_tag('div'));
2182 return html_writer::start_tag('div', array('id' => $id,
2183 'class' => renderer_base::prepare_classes($classes)));
2187 * Outputs the closing section of a container.
2188 * @return string the HTML to output.
2190 public function container_end() {
2191 return $this->opencontainers->pop('container');
2195 * Make nested HTML lists out of the items
2197 * The resulting list will look something like this:
2201 * <<li>><div class='tree_item parent'>(item contents)</div>
2203 * <<li>><div class='tree_item'>(item contents)</div><</li>>
2209 * @param array[]tree_item $items
2210 * @param array[string]string $attrs html attributes passed to the top of
2212 * @return string HTML
2214 function tree_block_contents($items, $attrs=array()) {
2215 // exit if empty, we don't want an empty ul element
2216 if (empty($items)) {
2219 // array of nested li elements
2221 foreach ($items as $item) {
2222 // this applies to the li item which contains all child lists too
2223 $content = $item->content($this);
2224 $liclasses = array($item->get_css_type());
2225 if (!$item->forceopen || (!$item->forceopen && $item->collapse) || ($item->children->count()==0 && $item->nodetype==navigation_node::NODETYPE_BRANCH)) {
2226 $liclasses[] = 'collapsed';
2228 if ($item->isactive === true) {
2229 $liclasses[] = 'current_branch';
2231 $liattr = array('class'=>join(' ',$liclasses));
2232 // class attribute on the div item which only contains the item content
2233 $divclasses = array('tree_item');
2234 if ($item->children->count()>0 || $item->nodetype==navigation_node::NODETYPE_BRANCH) {
2235 $divclasses[] = 'branch';
2237 $divclasses[] = 'leaf';
2239 if (!empty($item->classes) && count($item->classes)>0) {
2240 $divclasses[] = join(' ', $item->classes);
2242 $divattr = array('class'=>join(' ', $divclasses));
2243 if (!empty($item->id)) {
2244 $divattr['id'] = $item->id;
2246 $content = html_writer::tag('p', $content, $divattr) . $this->tree_block_contents($item->children);
2247 if (!empty($item->preceedwithhr) && $item->preceedwithhr===true) {
2248 $content = html_writer::empty_tag('hr') . $content;
2250 $content = html_writer::tag('li', $content, $liattr);
2253 return html_writer::tag('ul', implode("\n", $lis), $attrs);
2257 * Return the navbar content so that it can be echoed out by the layout
2258 * @return string XHTML navbar
2260 public function navbar() {
2261 //return $this->page->navbar->content();
2263 $items = $this->page->navbar->get_items();
2267 $htmlblocks = array();
2268 // Iterate the navarray and display each node
2269 $itemcount = count($items);
2270 $separator = get_separator();
2271 for ($i=0;$i < $itemcount;$i++) {
2273 $item->hideicon = true;
2275 $content = html_writer::tag('li', $this->render($item));
2277 $content = html_writer::tag('li', $separator.$this->render($item));
2279 $htmlblocks[] = $content;
2282 //accessibility: heading for navbar list (MDL-20446)
2283 $navbarcontent = html_writer::tag('span', get_string('pagepath'), array('class'=>'accesshide'));
2284 $navbarcontent .= html_writer::tag('ul', join('', $htmlblocks));
2286 return $navbarcontent;
2289 protected function render_navigation_node(navigation_node $item) {
2290 $content = $item->get_content();
2291 $title = $item->get_title();
2292 if ($item->icon instanceof renderable && !$item->hideicon) {
2293 $icon = $this->render($item->icon);
2294 $content = $icon.$content; // use CSS for spacing of icons
2296 if ($item->helpbutton !== null) {
2297 $content = trim($item->helpbutton).html_writer::tag('span', $content, array('class'=>'clearhelpbutton'));
2299 if ($content === '') {
2302 if ($item->action instanceof action_link) {
2303 //TODO: to be replaced with something else
2304 $link = $item->action;
2305 if ($item->hidden) {
2306 $link->add_class('dimmed');
2308 $content = $this->output->render($link);
2309 } else if ($item->action instanceof moodle_url) {
2310 $attributes = array();
2311 if ($title !== '') {
2312 $attributes['title'] = $title;
2314 if ($item->hidden) {
2315 $attributes['class'] = 'dimmed_text';
2317 $content = html_writer::link($item->action, $content, $attributes);
2319 } else if (is_string($item->action) || empty($item->action)) {
2320 $attributes = array();
2321 if ($title !== '') {
2322 $attributes['title'] = $title;
2324 if ($item->hidden) {
2325 $attributes['class'] = 'dimmed_text';
2327 $content = html_writer::tag('span', $content, $attributes);
2333 * Accessibility: Right arrow-like character is
2334 * used in the breadcrumb trail, course navigation menu
2335 * (previous/next activity), calendar, and search forum block.
2336 * If the theme does not set characters, appropriate defaults
2337 * are set automatically. Please DO NOT
2338 * use < > » - these are confusing for blind users.
2341 public function rarrow() {
2342 return $this->page->theme->rarrow;
2346 * Accessibility: Right arrow-like character is
2347 * used in the breadcrumb trail, course navigation menu
2348 * (previous/next activity), calendar, and search forum block.
2349 * If the theme does not set characters, appropriate defaults
2350 * are set automatically. Please DO NOT
2351 * use < > » - these are confusing for blind users.
2354 public function larrow() {
2355 return $this->page->theme->larrow;
2359 * Returns the colours of the small MP3 player
2362 public function filter_mediaplugin_colors() {
2363 return $this->page->theme->filter_mediaplugin_colors;
2367 * Returns the colours of the big MP3 player
2370 public function resource_mp3player_colors() {
2371 return $this->page->theme->resource_mp3player_colors;
2375 * Returns the custom menu if one has been set
2377 * A custom menu can be configured by browsing to
2378 * Settings: Administration > Appearance > Themes > Theme settings
2379 * and then configuring the custommenu config setting as described.
2383 public function custom_menu() {
2385 if (empty($CFG->custommenuitems)) {
2388 $custommenu = new custom_menu();
2389 return $this->render_custom_menu($custommenu);
2393 * Renders a custom menu object (located in outputcomponents.php)
2395 * The custom menu this method produces makes use of the YUI3 menunav widget
2396 * and requires very specific html elements and classes.
2398 * @staticvar int $menucount
2399 * @param custom_menu $menu
2402 protected function render_custom_menu(custom_menu $menu) {
2403 static $menucount = 0;
2404 // If the menu has no children return an empty string
2405 if (!$menu->has_children()) {
2408 // Increment the menu count. This is used for ID's that get worked with
2409 // in JavaScript as is essential
2411 // Initialise this custom menu
2412 $this->page->requires->js_init_call('M.core_custom_menu.init', array('custom_menu_'.$menucount));
2413 // Build the root nodes as required by YUI
2414 $content = html_writer::start_tag('div', array('id'=>'custom_menu_'.$menucount, 'class'=>'yui3-menu yui3-menu-horizontal javascript-disabled'));
2415 $content .= html_writer::start_tag('div', array('class'=>'yui3-menu-content'));
2416 $content .= html_writer::start_tag('ul');
2417 // Render each child
2418 foreach ($menu->get_children() as $item) {
2419 $content .= $this->render_custom_menu_item($item);
2421 // Close the open tags
2422 $content .= html_writer::end_tag('ul');
2423 $content .= html_writer::end_tag('div');
2424 $content .= html_writer::end_tag('div');
2425 // Return the custom menu
2430 * Renders a custom menu node as part of a submenu
2432 * The custom menu this method produces makes use of the YUI3 menunav widget
2433 * and requires very specific html elements and classes.
2435 * @see render_custom_menu()
2437 * @staticvar int $submenucount
2438 * @param custom_menu_item $menunode
2441 protected function render_custom_menu_item(custom_menu_item $menunode) {
2442 // Required to ensure we get unique trackable id's
2443 static $submenucount = 0;
2444 if ($menunode->has_children()) {
2445 // If the child has menus render it as a sub menu
2447 $content = html_writer::start_tag('li');
2448 if ($menunode->get_url() !== null) {
2449 $url = $menunode->get_url();
2451 $url = '#cm_submenu_'.$submenucount;
2453 $content .= html_writer::link($url, $menunode->get_text(), array('class'=>'yui3-menu-label', 'title'=>$menunode->get_title()));
2454 $content .= html_writer::start_tag('div', array('id'=>'cm_submenu_'.$submenucount, 'class'=>'yui3-menu custom_menu_submenu'));
2455 $content .= html_writer::start_tag('div', array('class'=>'yui3-menu-content'));
2456 $content .= html_writer::start_tag('ul');
2457 foreach ($menunode->get_children() as $menunode) {
2458 $content .= $this->render_custom_menu_item($menunode);
2460 $content .= html_writer::end_tag('ul');
2461 $content .= html_writer::end_tag('div');
2462 $content .= html_writer::end_tag('div');
2463 $content .= html_writer::end_tag('li');
2465 // The node doesn't have children so produce a final menuitem
2466 $content = html_writer::start_tag('li', array('class'=>'yui3-menuitem'));
2467 if ($menunode->get_url() !== null) {
2468 $url = $menunode->get_url();
2472 $content .= html_writer::link($url, $menunode->get_text(), array('class'=>'yui3-menuitem-content', 'title'=>$menunode->get_title()));
2473 $content .= html_writer::end_tag('li');
2475 // Return the sub menu
2480 * Renders the image_gallery component and initialises its JavaScript
2482 * @param image_gallery $imagegallery
2485 protected function render_image_gallery(image_gallery $imagegallery) {
2486 $this->page->requires->yui_module(array('gallery-lightbox','gallery-lightbox-skin'),
2487 'Y.Lightbox.init', null, '2010.04.08-12-35');
2488 if (count($imagegallery->images) == 0) {
2491 $classes = array('image_gallery');
2492 if ($imagegallery->displayfirstimageonly) {
2493 $classes[] = 'oneimageonly';
2495 $content = html_writer::start_tag('div', array('class'=>join(' ', $classes)));
2496 foreach ($imagegallery->images as $image) {
2497 $content .= html_writer::tag('a', html_writer::empty_tag('img', $image->thumb), $image->link);
2499 $content .= html_writer::end_tag('div');
2508 * A renderer that generates output for command-line scripts.
2510 * The implementation of this renderer is probably incomplete.
2512 * @copyright 2009 Tim Hunt
2513 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2516 class core_renderer_cli extends core_renderer {
2518 * Returns the page header.
2519 * @return string HTML fragment
2521 public function header() {
2522 output_starting_hook();
2523 return $this->page->heading . "\n";
2527 * Returns a template fragment representing a Heading.
2528 * @param string $text The text of the heading
2529 * @param int $level The level of importance of the heading
2530 * @param string $classes A space-separated list of CSS classes
2531 * @param string $id An optional ID
2532 * @return string A template fragment for a heading
2534 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2538 return '=>' . $text;
2540 return '-->' . $text;
2547 * Returns a template fragment representing a fatal error.
2548 * @param string $message The message to output
2549 * @param string $moreinfourl URL where more info can be found about the error
2550 * @param string $link Link for the Continue button
2551 * @param array $backtrace The execution backtrace
2552 * @param string $debuginfo Debugging information
2553 * @return string A template fragment for a fatal error
2555 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2556 $output = "!!! $message !!!\n";
2558 if (debugging('', DEBUG_DEVELOPER)) {
2559 if (!empty($debuginfo)) {
2560 $this->notification($debuginfo, 'notifytiny');
2562 if (!empty($backtrace)) {
2563 $this->notification('Stack trace: ' . format_backtrace($backtrace, true), 'notifytiny');
2569 * Returns a template fragment representing a notification.
2570 * @param string $message The message to include
2571 * @param string $classes A space-separated list of CSS classes
2572 * @return string A template fragment for a notification
2574 public function notification($message, $classes = 'notifyproblem') {
2575 $message = clean_text($message);
2576 if ($classes === 'notifysuccess') {
2577 return "++ $message ++\n";
2579 return "!! $message !!\n";
2585 * A renderer that generates output for ajax scripts.
2587 * This renderer prevents accidental sends back only json
2588 * encoded error messages, all other output is ignored.
2590 * @copyright 2010 Petr Skoda
2591 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2594 class core_renderer_ajax extends core_renderer {
2596 * Returns a template fragment representing a fatal error.
2597 * @param string $message The message to output
2598 * @param string $moreinfourl URL where more info can be found about the error
2599 * @param string $link Link for the Continue button
2600 * @param array $backtrace The execution backtrace
2601 * @param string $debuginfo Debugging information
2602 * @return string A template fragment for a fatal error
2604 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2605 global $FULLME, $USER;
2607 $this->page->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2609 $e = new stdClass();
2610 $e->error = $message;
2611 $e->stacktrace = NULL;
2612 $e->debuginfo = NULL;
2613 $e->reproductionlink = NULL;
2614 if (!empty($CFG->debug) and $CFG->debug >= DEBUG_DEVELOPER) {
2615 $e->reproductionlink = $link;
2616 if (!empty($debuginfo)) {
2617 $e->debuginfo = $debuginfo;
2619 if (!empty($backtrace)) {
2620 $e->stacktrace = format_backtrace($backtrace, true);
2624 return json_encode($e);
2627 public function notification($message, $classes = 'notifyproblem') {
2630 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
2633 public function header() {
2634 // unfortunately YUI iframe upload does not support application/json
2635 if (!empty($_FILES)) {
2636 @header('Content-type: text/plain');
2638 @header('Content-type: application/json');
2641 /// Headers to make it not cacheable and json
2642 @header('Cache-Control: no-store, no-cache, must-revalidate');
2643 @header('Cache-Control: post-check=0, pre-check=0', false);
2644 @header('Pragma: no-cache');
2645 @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
2646 @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
2647 @header('Accept-Ranges: none');
2650 public function footer() {
2653 public function heading($text, $level = 2, $classes = 'main', $id = null) {