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 // flow player embedding support
283 $this->page
->requires
->js_function_call('M.util.load_flowplayer');
285 $this->page
->requires
->js_function_call('setTimeout', array('fix_column_widths()', 20));
287 $focus = $this->page
->focuscontrol
;
288 if (!empty($focus)) {
289 if (preg_match("#forms\['([a-zA-Z0-9]+)'\].elements\['([a-zA-Z0-9]+)'\]#", $focus, $matches)) {
290 // This is a horrifically bad way to handle focus but it is passed in
291 // through messy formslib::moodleform
292 $this->page
->requires
->js_function_call('old_onload_focus', array($matches[1], $matches[2]));
293 } else if (strpos($focus, '.')!==false) {
294 // Old style of focus, bad way to do it
295 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
);
296 $this->page
->requires
->js_function_call('old_onload_focus', explode('.', $focus, 2));
298 // Focus element with given id
299 $this->page
->requires
->js_function_call('focuscontrol', array($focus));
303 // Get the theme stylesheet - this has to be always first CSS, this loads also styles.css from all plugins;
304 // any other custom CSS can not be overridden via themes and is highly discouraged
305 $urls = $this->page
->theme
->css_urls($this->page
);
306 foreach ($urls as $url) {
307 $this->page
->requires
->css_theme($url);
310 // Get the theme javascript head and footer
311 $jsurl = $this->page
->theme
->javascript_url(true);
312 $this->page
->requires
->js($jsurl, true);
313 $jsurl = $this->page
->theme
->javascript_url(false);
314 $this->page
->requires
->js($jsurl);
316 // Perform a browser environment check for the flash version. Should only run once per login session.
317 if (!NO_MOODLE_COOKIES
&& isloggedin() && !empty($CFG->excludeoldflashclients
) && empty($SESSION->flashversion
)) {
318 $this->page
->requires
->js('/lib/swfobject/swfobject.js');
319 $this->page
->requires
->js_init_call('M.core_flashdetect.init');
322 // Get any HTML from the page_requirements_manager.
323 $output .= $this->page
->requires
->get_head_code($this->page
, $this);
325 // List alternate versions.
326 foreach ($this->page
->alternateversions
as $type => $alt) {
327 $output .= html_writer
::empty_tag('link', array('rel' => 'alternate',
328 'type' => $type, 'title' => $alt->title
, 'href' => $alt->url
));
331 if (!empty($CFG->additionalhtmlhead
)) {
332 $output .= "\n".$CFG->additionalhtmlhead
;
339 * The standard tags (typically skip links) that should be output just inside
340 * the start of the <body> tag. Designed to be called in theme layout.php files.
341 * @return string HTML fragment.
343 public function standard_top_of_body_html() {
345 $output = $this->page
->requires
->get_top_of_body_code();
346 if (!empty($CFG->additionalhtmltopofbody
)) {
347 $output .= "\n".$CFG->additionalhtmltopofbody
;
353 * The standard tags (typically performance information and validation links,
354 * if we are in developer debug mode) that should be output in the footer area
355 * of the page. Designed to be called in theme layout.php files.
356 * @return string HTML fragment.
358 public function standard_footer_html() {
359 global $CFG, $SCRIPT;
361 // This function is normally called from a layout.php file in {@link header()}
362 // but some of the content won't be known until later, so we return a placeholder
363 // for now. This will be replaced with the real content in {@link footer()}.
364 $output = self
::PERFORMANCE_INFO_TOKEN
;
365 if ($this->page
->legacythemeinuse
) {
366 // The legacy theme is in use print the notification
367 $output .= html_writer
::tag('div', get_string('legacythemeinuse'), array('class'=>'legacythemeinuse'));
369 if (!empty($CFG->debugpageinfo
)) {
370 $output .= '<div class="performanceinfo pageinfo">This page is: ' . $this->page
->debug_summary() . '</div>';
372 if (debugging(null, DEBUG_DEVELOPER
) and has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM
))) { // Only in developer mode
373 // Add link to profiling report if necessary
374 if (function_exists('profiling_is_running') && profiling_is_running()) {
375 $txt = get_string('profiledscript', 'admin');
376 $title = get_string('profiledscriptview', 'admin');
377 $url = $CFG->wwwroot
. '/admin/report/profiling/index.php?script=' . urlencode($SCRIPT);
378 $link= '<a title="' . $title . '" href="' . $url . '">' . $txt . '</a>';
379 $output .= '<div class="profilingfooter">' . $link . '</div>';
381 $output .= '<div class="purgecaches"><a href="'.$CFG->wwwroot
.'/admin/purgecaches.php?confirm=1&sesskey='.sesskey().'">'.get_string('purgecaches', 'admin').'</a></div>';
383 if (!empty($CFG->debugvalidators
)) {
384 $output .= '<div class="validators"><ul>
385 <li><a href="http://validator.w3.org/check?verbose=1&ss=1&uri=' . urlencode(qualified_me()) . '">Validate HTML</a></li>
386 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=-1&url1=' . urlencode(qualified_me()) . '">Section 508 Check</a></li>
387 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=0&warnp2n3e=1&url1=' . urlencode(qualified_me()) . '">WCAG 1 (2,3) Check</a></li>
390 if (!empty($CFG->additionalhtmlfooter
)) {
391 $output .= "\n".$CFG->additionalhtmlfooter
;
397 * The standard tags (typically script tags that are not needed earlier) that
398 * should be output after everything else, . Designed to be called in theme layout.php files.
399 * @return string HTML fragment.
401 public function standard_end_of_body_html() {
402 // This function is normally called from a layout.php file in {@link header()}
403 // but some of the content won't be known until later, so we return a placeholder
404 // for now. This will be replaced with the real content in {@link footer()}.
405 return self
::END_HTML_TOKEN
;
409 * Return the standard string that says whether you are logged in (and switched
410 * roles/logged in as another user).
411 * @return string HTML fragment.
413 public function login_info() {
414 global $USER, $CFG, $DB, $SESSION;
416 if (during_initial_install()) {
420 $loginapge = ((string)$this->page
->url
=== get_login_url());
421 $course = $this->page
->course
;
423 if (session_is_loggedinas()) {
424 $realuser = session_get_realuser();
425 $fullname = fullname($realuser, true);
426 $realuserinfo = " [<a href=\"$CFG->wwwroot/course/loginas.php?id=$course->id&sesskey=".sesskey()."\">$fullname</a>] ";
431 $loginurl = get_login_url();
433 if (empty($course->id
)) {
434 // $course->id is not defined during installation
436 } else if (isloggedin()) {
437 $context = get_context_instance(CONTEXT_COURSE
, $course->id
);
439 $fullname = fullname($USER, true);
440 // Since Moodle 2.0 this link always goes to the public profile page (not the course profile page)
441 $username = "<a href=\"$CFG->wwwroot/user/profile.php?id=$USER->id\">$fullname</a>";
442 if (is_mnet_remote_user($USER) and $idprovider = $DB->get_record('mnet_host', array('id'=>$USER->mnethostid
))) {
443 $username .= " from <a href=\"{$idprovider->wwwroot}\">{$idprovider->name}</a>";
446 $loggedinas = $realuserinfo.get_string('loggedinasguest');
448 $loggedinas .= " (<a href=\"$loginurl\">".get_string('login').'</a>)';
450 } else if (is_role_switched($course->id
)) { // Has switched roles
452 if ($role = $DB->get_record('role', array('id'=>$USER->access
['rsw'][$context->path
]))) {
453 $rolename = ': '.format_string($role->name
);
455 $loggedinas = get_string('loggedinas', 'moodle', $username).$rolename.
456 " (<a href=\"$CFG->wwwroot/course/view.php?id=$course->id&switchrole=0&sesskey=".sesskey()."\">".get_string('switchrolereturn').'</a>)';
458 $loggedinas = $realuserinfo.get_string('loggedinas', 'moodle', $username).' '.
459 " (<a href=\"$CFG->wwwroot/login/logout.php?sesskey=".sesskey()."\">".get_string('logout').'</a>)';
462 $loggedinas = get_string('loggedinnot', 'moodle');
464 $loggedinas .= " (<a href=\"$loginurl\">".get_string('login').'</a>)';
468 $loggedinas = '<div class="logininfo">'.$loggedinas.'</div>';
470 if (isset($SESSION->justloggedin
)) {
471 unset($SESSION->justloggedin
);
472 if (!empty($CFG->displayloginfailures
)) {
473 if (!isguestuser()) {
474 if ($count = count_login_failures($CFG->displayloginfailures
, $USER->username
, $USER->lastlogin
)) {
475 $loggedinas .= ' <div class="loginfailures">';
476 if (empty($count->accounts
)) {
477 $loggedinas .= get_string('failedloginattempts', '', $count);
479 $loggedinas .= get_string('failedloginattemptsall', '', $count);
481 if (has_capability('coursereport/log:view', get_context_instance(CONTEXT_SYSTEM
))) {
482 $loggedinas .= ' (<a href="'.$CFG->wwwroot
.'/course/report/log/index.php'.
483 '?chooselog=1&id=1&modid=site_errors">'.get_string('logs').'</a>)';
485 $loggedinas .= '</div>';
495 * Return the 'back' link that normally appears in the footer.
496 * @return string HTML fragment.
498 public function home_link() {
501 if ($this->page
->pagetype
== 'site-index') {
502 // Special case for site home page - please do not remove
503 return '<div class="sitelink">' .
504 '<a title="Moodle" href="http://moodle.org/">' .
505 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
507 } else if (!empty($CFG->target_release
) && $CFG->target_release
!= $CFG->release
) {
508 // Special case for during install/upgrade.
509 return '<div class="sitelink">'.
510 '<a title="Moodle" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">' .
511 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
513 } else if ($this->page
->course
->id
== $SITE->id ||
strpos($this->page
->pagetype
, 'course-view') === 0) {
514 return '<div class="homelink"><a href="' . $CFG->wwwroot
. '/">' .
515 get_string('home') . '</a></div>';
518 return '<div class="homelink"><a href="' . $CFG->wwwroot
. '/course/view.php?id=' . $this->page
->course
->id
. '">' .
519 format_string($this->page
->course
->shortname
) . '</a></div>';
524 * Redirects the user by any means possible given the current state
526 * This function should not be called directly, it should always be called using
527 * the redirect function in lib/weblib.php
529 * The redirect function should really only be called before page output has started
530 * however it will allow itself to be called during the state STATE_IN_BODY
532 * @param string $encodedurl The URL to send to encoded if required
533 * @param string $message The message to display to the user if any
534 * @param int $delay The delay before redirecting a user, if $message has been
535 * set this is a requirement and defaults to 3, set to 0 no delay
536 * @param boolean $debugdisableredirect this redirect has been disabled for
537 * debugging purposes. Display a message that explains, and don't
538 * trigger the redirect.
539 * @return string The HTML to display to the user before dying, may contain
540 * meta refresh, javascript refresh, and may have set header redirects
542 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
544 $url = str_replace('&', '&', $encodedurl);
546 switch ($this->page
->state
) {
547 case moodle_page
::STATE_BEFORE_HEADER
:
548 // No output yet it is safe to delivery the full arsenal of redirect methods
549 if (!$debugdisableredirect) {
550 // Don't use exactly the same time here, it can cause problems when both redirects fire at the same time.
551 $this->metarefreshtag
= '<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />'."\n";
552 $this->page
->requires
->js_function_call('document.location.replace', array($url), false, ($delay +
3));
554 $output = $this->header();
556 case moodle_page
::STATE_PRINTING_HEADER
:
557 // We should hopefully never get here
558 throw new coding_exception('You cannot redirect while printing the page header');
560 case moodle_page
::STATE_IN_BODY
:
561 // We really shouldn't be here but we can deal with this
562 debugging("You should really redirect before you start page output");
563 if (!$debugdisableredirect) {
564 $this->page
->requires
->js_function_call('document.location.replace', array($url), false, $delay);
566 $output = $this->opencontainers
->pop_all_but_last();
568 case moodle_page
::STATE_DONE
:
569 // Too late to be calling redirect now
570 throw new coding_exception('You cannot redirect after the entire page has been generated');
573 $output .= $this->notification($message, 'redirectmessage');
574 $output .= '<div class="continuebutton">(<a href="'. $encodedurl .'">'. get_string('continue') .'</a>)</div>';
575 if ($debugdisableredirect) {
576 $output .= '<p><strong>Error output, so disabling automatic redirect.</strong></p>';
578 $output .= $this->footer();
583 * Start output by sending the HTTP headers, and printing the HTML <head>
584 * and the start of the <body>.
586 * To control what is printed, you should set properties on $PAGE. If you
587 * are familiar with the old {@link print_header()} function from Moodle 1.9
588 * you will find that there are properties on $PAGE that correspond to most
589 * of the old parameters to could be passed to print_header.
591 * Not that, in due course, the remaining $navigation, $menu parameters here
592 * will be replaced by more properties of $PAGE, but that is still to do.
594 * @return string HTML that you must output this, preferably immediately.
596 public function header() {
599 if (session_is_loggedinas()) {
600 $this->page
->add_body_class('userloggedinas');
603 $this->page
->set_state(moodle_page
::STATE_PRINTING_HEADER
);
605 // Find the appropriate page layout file, based on $this->page->pagelayout.
606 $layoutfile = $this->page
->theme
->layout_file($this->page
->pagelayout
);
607 // Render the layout using the layout file.
608 $rendered = $this->render_page_layout($layoutfile);
610 // Slice the rendered output into header and footer.
611 $cutpos = strpos($rendered, self
::MAIN_CONTENT_TOKEN
);
612 if ($cutpos === false) {
613 throw new coding_exception('page layout file ' . $layoutfile .
614 ' does not contain the string "' . self
::MAIN_CONTENT_TOKEN
. '".');
616 $header = substr($rendered, 0, $cutpos);
617 $footer = substr($rendered, $cutpos +
strlen(self
::MAIN_CONTENT_TOKEN
));
619 if (empty($this->contenttype
)) {
620 debugging('The page layout file did not call $OUTPUT->doctype()');
621 $header = $this->doctype() . $header;
624 send_headers($this->contenttype
, $this->page
->cacheable
);
626 $this->opencontainers
->push('header/footer', $footer);
627 $this->page
->set_state(moodle_page
::STATE_IN_BODY
);
629 return $header . $this->skip_link_target('maincontent');
633 * Renders and outputs the page layout file.
634 * @param string $layoutfile The name of the layout file
635 * @return string HTML code
637 protected function render_page_layout($layoutfile) {
638 global $CFG, $SITE, $USER;
639 // The next lines are a bit tricky. The point is, here we are in a method
640 // of a renderer class, and this object may, or may not, be the same as
641 // the global $OUTPUT object. When rendering the page layout file, we want to use
642 // this object. However, people writing Moodle code expect the current
643 // renderer to be called $OUTPUT, not $this, so define a variable called
644 // $OUTPUT pointing at $this. The same comment applies to $PAGE and $COURSE.
647 $COURSE = $this->page
->course
;
650 include($layoutfile);
651 $rendered = ob_get_contents();
657 * Outputs the page's footer
658 * @return string HTML fragment
660 public function footer() {
663 $output = $this->container_end_all(true);
665 $footer = $this->opencontainers
->pop('header/footer');
667 if (debugging() and $DB and $DB->is_transaction_started()) {
668 // TODO: MDL-20625 print warning - transaction will be rolled back
671 // Provide some performance info if required
672 $performanceinfo = '';
673 if (defined('MDL_PERF') ||
(!empty($CFG->perfdebug
) and $CFG->perfdebug
> 7)) {
674 $perf = get_performance_info();
675 if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
676 error_log("PERF: " . $perf['txt']);
678 if (defined('MDL_PERFTOFOOT') ||
debugging() ||
$CFG->perfdebug
> 7) {
679 $performanceinfo = $perf['html'];
682 $footer = str_replace(self
::PERFORMANCE_INFO_TOKEN
, $performanceinfo, $footer);
684 $footer = str_replace(self
::END_HTML_TOKEN
, $this->page
->requires
->get_end_code(), $footer);
686 $this->page
->set_state(moodle_page
::STATE_DONE
);
688 return $output . $footer;
692 * Close all but the last open container. This is useful in places like error
693 * handling, where you want to close all the open containers (apart from <body>)
694 * before outputting the error message.
695 * @param bool $shouldbenone assert that the stack should be empty now - causes a
696 * developer debug warning if it isn't.
697 * @return string the HTML required to close any open containers inside <body>.
699 public function container_end_all($shouldbenone = false) {
700 return $this->opencontainers
->pop_all_but_last($shouldbenone);
704 * Returns lang menu or '', this method also checks forcing of languages in courses.
707 public function lang_menu() {
710 if (empty($CFG->langmenu
)) {
714 if ($this->page
->course
!= SITEID
and !empty($this->page
->course
->lang
)) {
715 // do not show lang menu if language forced
719 $currlang = current_language();
720 $langs = get_string_manager()->get_list_of_translations();
722 if (count($langs) < 2) {
726 $s = new single_select($this->page
->url
, 'lang', $langs, $currlang, null);
727 $s->label
= get_accesshide(get_string('language'));
728 $s->class = 'langmenu';
729 return $this->render($s);
733 * Output the row of editing icons for a block, as defined by the controls array.
734 * @param array $controls an array like {@link block_contents::$controls}.
735 * @return HTML fragment.
737 public function block_controls($controls) {
738 if (empty($controls)) {
741 $controlshtml = array();
742 foreach ($controls as $control) {
743 $controlshtml[] = html_writer
::tag('a',
744 html_writer
::empty_tag('img', array('src' => $this->pix_url($control['icon'])->out(false), 'alt' => $control['caption'])),
745 array('class' => 'icon','title' => $control['caption'], 'href' => $control['url']));
747 return html_writer
::tag('div', implode('', $controlshtml), array('class' => 'commands'));
751 * Prints a nice side block with an optional header.
753 * The content is described
754 * by a {@link block_contents} object.
756 * <div id="inst{$instanceid}" class="block_{$blockname} block">
757 * <div class="header"></div>
758 * <div class="content">
760 * <div class="footer">
763 * <div class="annotation">
767 * @param block_contents $bc HTML for the content
768 * @param string $region the region the block is appearing in.
769 * @return string the HTML to be output.
771 function block(block_contents
$bc, $region) {
772 $bc = clone($bc); // Avoid messing up the object passed in.
773 if (empty($bc->blockinstanceid
) ||
!strip_tags($bc->title
)) {
774 $bc->collapsible
= block_contents
::NOT_HIDEABLE
;
776 if ($bc->collapsible
== block_contents
::HIDDEN
) {
777 $bc->add_class('hidden');
779 if (!empty($bc->controls
)) {
780 $bc->add_class('block_with_controls');
783 $skiptitle = strip_tags($bc->title
);
784 if (empty($skiptitle)) {
788 $output = html_writer
::tag('a', get_string('skipa', 'access', $skiptitle), array('href' => '#sb-' . $bc->skipid
, 'class' => 'skip-block'));
789 $skipdest = html_writer
::tag('span', '', array('id' => 'sb-' . $bc->skipid
, 'class' => 'skip-block-to'));
792 $output .= html_writer
::start_tag('div', $bc->attributes
);
794 $output .= $this->block_header($bc);
795 $output .= $this->block_content($bc);
797 $output .= html_writer
::end_tag('div');
799 $output .= $this->block_annotation($bc);
801 $output .= $skipdest;
803 $this->init_block_hider_js($bc);
808 * Produces a header for a block
810 * @param block_contents $bc
813 protected function block_header(block_contents
$bc) {
817 $title = html_writer
::tag('h2', $bc->title
, null);
820 $controlshtml = $this->block_controls($bc->controls
);
823 if ($title ||
$controlshtml) {
824 $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'));
830 * Produces the content area for a block
832 * @param block_contents $bc
835 protected function block_content(block_contents
$bc) {
836 $output = html_writer
::start_tag('div', array('class' => 'content'));
837 if (!$bc->title
&& !$this->block_controls($bc->controls
)) {
838 $output .= html_writer
::tag('div', '', array('class'=>'block_action notitle'));
840 $output .= $bc->content
;
841 $output .= $this->block_footer($bc);
842 $output .= html_writer
::end_tag('div');
848 * Produces the footer for a block
850 * @param block_contents $bc
853 protected function block_footer(block_contents
$bc) {
856 $output .= html_writer
::tag('div', $bc->footer
, array('class' => 'footer'));
862 * Produces the annotation for a block
864 * @param block_contents $bc
867 protected function block_annotation(block_contents
$bc) {
869 if ($bc->annotation
) {
870 $output .= html_writer
::tag('div', $bc->annotation
, array('class' => 'blockannotation'));
876 * Calls the JS require function to hide a block.
877 * @param block_contents $bc A block_contents object
880 protected function init_block_hider_js(block_contents
$bc) {
881 if (!empty($bc->attributes
['id']) and $bc->collapsible
!= block_contents
::NOT_HIDEABLE
) {
882 $config = new stdClass
;
883 $config->id
= $bc->attributes
['id'];
884 $config->title
= strip_tags($bc->title
);
885 $config->preference
= 'block' . $bc->blockinstanceid
. 'hidden';
886 $config->tooltipVisible
= get_string('hideblocka', 'access', $config->title
);
887 $config->tooltipHidden
= get_string('showblocka', 'access', $config->title
);
889 $this->page
->requires
->js_init_call('M.util.init_block_hider', array($config));
890 user_preference_allow_ajax_update($config->preference
, PARAM_BOOL
);
895 * Render the contents of a block_list.
896 * @param array $icons the icon for each item.
897 * @param array $items the content of each item.
898 * @return string HTML
900 public function list_block_contents($icons, $items) {
903 foreach ($items as $key => $string) {
904 $item = html_writer
::start_tag('li', array('class' => 'r' . $row));
905 if (!empty($icons[$key])) { //test if the content has an assigned icon
906 $item .= html_writer
::tag('div', $icons[$key], array('class' => 'icon column c0'));
908 $item .= html_writer
::tag('div', $string, array('class' => 'column c1'));
909 $item .= html_writer
::end_tag('li');
911 $row = 1 - $row; // Flip even/odd.
913 return html_writer
::tag('ul', implode("\n", $lis), array('class' => 'unlist'));
917 * Output all the blocks in a particular region.
918 * @param string $region the name of a region on this page.
919 * @return string the HTML to be output.
921 public function blocks_for_region($region) {
922 $blockcontents = $this->page
->blocks
->get_content_for_region($region, $this);
925 foreach ($blockcontents as $bc) {
926 if ($bc instanceof block_contents
) {
927 $output .= $this->block($bc, $region);
928 } else if ($bc instanceof block_move_target
) {
929 $output .= $this->block_move_target($bc);
931 throw new coding_exception('Unexpected type of thing (' . get_class($bc) . ') found in list of block contents.');
938 * Output a place where the block that is currently being moved can be dropped.
939 * @param block_move_target $target with the necessary details.
940 * @return string the HTML to be output.
942 public function block_move_target($target) {
943 return html_writer
::tag('a', html_writer
::tag('span', $target->text
, array('class' => 'accesshide')), array('href' => $target->url
, 'class' => 'blockmovetarget'));
947 * Renders a special html link with attached action
949 * @param string|moodle_url $url
950 * @param string $text HTML fragment
951 * @param component_action $action
952 * @param array $attributes associative array of html link attributes + disabled
953 * @return HTML fragment
955 public function action_link($url, $text, component_action
$action = null, array $attributes=null) {
956 if (!($url instanceof moodle_url
)) {
957 $url = new moodle_url($url);
959 $link = new action_link($url, $text, $action, $attributes);
961 return $this->render($link);
965 * Implementation of action_link rendering
966 * @param action_link $link
967 * @return string HTML fragment
969 protected function render_action_link(action_link
$link) {
972 // A disabled link is rendered as formatted text
973 if (!empty($link->attributes
['disabled'])) {
974 // do not use div here due to nesting restriction in xhtml strict
975 return html_writer
::tag('span', $link->text
, array('class'=>'currentlink'));
978 $attributes = $link->attributes
;
979 unset($link->attributes
['disabled']);
980 $attributes['href'] = $link->url
;
982 if ($link->actions
) {
983 if (empty($attributes['id'])) {
984 $id = html_writer
::random_id('action_link');
985 $attributes['id'] = $id;
987 $id = $attributes['id'];
989 foreach ($link->actions
as $action) {
990 $this->add_action_handler($action, $id);
994 return html_writer
::tag('a', $link->text
, $attributes);
999 * Similar to action_link, image is used instead of the text
1001 * @param string|moodle_url $url A string URL or moodel_url
1002 * @param pix_icon $pixicon
1003 * @param component_action $action
1004 * @param array $attributes associative array of html link attributes + disabled
1005 * @param bool $linktext show title next to image in link
1006 * @return string HTML fragment
1008 public function action_icon($url, pix_icon
$pixicon, component_action
$action = null, array $attributes = null, $linktext=false) {
1009 if (!($url instanceof moodle_url
)) {
1010 $url = new moodle_url($url);
1012 $attributes = (array)$attributes;
1014 if (empty($attributes['class'])) {
1015 // let ppl override the class via $options
1016 $attributes['class'] = 'action-icon';
1019 $icon = $this->render($pixicon);
1022 $text = $pixicon->attributes
['alt'];
1027 return $this->action_link($url, $text.$icon, $action, $attributes);
1031 * Print a message along with button choices for Continue/Cancel
1033 * If a string or moodle_url is given instead of a single_button, method defaults to post.
1035 * @param string $message The question to ask the user
1036 * @param single_button|moodle_url|string $continue The single_button component representing the Continue answer. Can also be a moodle_url or string URL
1037 * @param single_button|moodle_url|string $cancel The single_button component representing the Cancel answer. Can also be a moodle_url or string URL
1038 * @return string HTML fragment
1040 public function confirm($message, $continue, $cancel) {
1041 if ($continue instanceof single_button
) {
1043 } else if (is_string($continue)) {
1044 $continue = new single_button(new moodle_url($continue), get_string('continue'), 'post');
1045 } else if ($continue instanceof moodle_url
) {
1046 $continue = new single_button($continue, get_string('continue'), 'post');
1048 throw new coding_exception('The continue param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1051 if ($cancel instanceof single_button
) {
1053 } else if (is_string($cancel)) {
1054 $cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
1055 } else if ($cancel instanceof moodle_url
) {
1056 $cancel = new single_button($cancel, get_string('cancel'), 'get');
1058 throw new coding_exception('The cancel param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1061 $output = $this->box_start('generalbox', 'notice');
1062 $output .= html_writer
::tag('p', $message);
1063 $output .= html_writer
::tag('div', $this->render($continue) . $this->render($cancel), array('class' => 'buttons'));
1064 $output .= $this->box_end();
1069 * Returns a form with a single button.
1071 * @param string|moodle_url $url
1072 * @param string $label button text
1073 * @param string $method get or post submit method
1074 * @param array $options associative array {disabled, title, etc.}
1075 * @return string HTML fragment
1077 public function single_button($url, $label, $method='post', array $options=null) {
1078 if (!($url instanceof moodle_url
)) {
1079 $url = new moodle_url($url);
1081 $button = new single_button($url, $label, $method);
1083 foreach ((array)$options as $key=>$value) {
1084 if (array_key_exists($key, $button)) {
1085 $button->$key = $value;
1089 return $this->render($button);
1093 * Internal implementation of single_button rendering
1094 * @param single_button $button
1095 * @return string HTML fragment
1097 protected function render_single_button(single_button
$button) {
1098 $attributes = array('type' => 'submit',
1099 'value' => $button->label
,
1100 'disabled' => $button->disabled ?
'disabled' : null,
1101 'title' => $button->tooltip
);
1103 if ($button->actions
) {
1104 $id = html_writer
::random_id('single_button');
1105 $attributes['id'] = $id;
1106 foreach ($button->actions
as $action) {
1107 $this->add_action_handler($action, $id);
1111 // first the input element
1112 $output = html_writer
::empty_tag('input', $attributes);
1114 // then hidden fields
1115 $params = $button->url
->params();
1116 if ($button->method
=== 'post') {
1117 $params['sesskey'] = sesskey();
1119 foreach ($params as $var => $val) {
1120 $output .= html_writer
::empty_tag('input', array('type' => 'hidden', 'name' => $var, 'value' => $val));
1123 // then div wrapper for xhtml strictness
1124 $output = html_writer
::tag('div', $output);
1126 // now the form itself around it
1127 if ($button->method
=== 'get') {
1128 $url = $button->url
->out_omit_querystring(true); // url without params, the anchor part allowed
1130 $url = $button->url
->out_omit_querystring(); // url without params, the anchor part not allowed
1133 $url = '#'; // there has to be always some action
1135 $attributes = array('method' => $button->method
,
1137 'id' => $button->formid
);
1138 $output = html_writer
::tag('form', $output, $attributes);
1140 // and finally one more wrapper with class
1141 return html_writer
::tag('div', $output, array('class' => $button->class));
1145 * Returns a form with a single select widget.
1146 * @param moodle_url $url form action target, includes hidden fields
1147 * @param string $name name of selection field - the changing parameter in url
1148 * @param array $options list of options
1149 * @param string $selected selected element
1150 * @param array $nothing
1151 * @param string $formid
1152 * @return string HTML fragment
1154 public function single_select($url, $name, array $options, $selected='', $nothing=array(''=>'choosedots'), $formid=null) {
1155 if (!($url instanceof moodle_url
)) {
1156 $url = new moodle_url($url);
1158 $select = new single_select($url, $name, $options, $selected, $nothing, $formid);
1160 return $this->render($select);
1164 * Internal implementation of single_select rendering
1165 * @param single_select $select
1166 * @return string HTML fragment
1168 protected function render_single_select(single_select
$select) {
1169 $select = clone($select);
1170 if (empty($select->formid
)) {
1171 $select->formid
= html_writer
::random_id('single_select_f');
1175 $params = $select->url
->params();
1176 if ($select->method
=== 'post') {
1177 $params['sesskey'] = sesskey();
1179 foreach ($params as $name=>$value) {
1180 $output .= html_writer
::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$value));
1183 if (empty($select->attributes
['id'])) {
1184 $select->attributes
['id'] = html_writer
::random_id('single_select');
1187 if ($select->disabled
) {
1188 $select->attributes
['disabled'] = 'disabled';
1191 if ($select->tooltip
) {
1192 $select->attributes
['title'] = $select->tooltip
;
1195 if ($select->label
) {
1196 $output .= html_writer
::label($select->label
, $select->attributes
['id']);
1199 if ($select->helpicon
instanceof help_icon
) {
1200 $output .= $this->render($select->helpicon
);
1201 } else if ($select->helpicon
instanceof old_help_icon
) {
1202 $output .= $this->render($select->helpicon
);
1205 $output .= html_writer
::select($select->options
, $select->name
, $select->selected
, $select->nothing
, $select->attributes
);
1207 $go = html_writer
::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1208 $output .= html_writer
::tag('noscript', html_writer
::tag('div', $go), array('style'=>'inline'));
1210 $nothing = empty($select->nothing
) ?
false : key($select->nothing
);
1211 $this->page
->requires
->js_init_call('M.util.init_select_autosubmit', array($select->formid
, $select->attributes
['id'], $nothing));
1213 // then div wrapper for xhtml strictness
1214 $output = html_writer
::tag('div', $output);
1216 // now the form itself around it
1217 if ($select->method
=== 'get') {
1218 $url = $select->url
->out_omit_querystring(true); // url without params, the anchor part allowed
1220 $url = $select->url
->out_omit_querystring(); // url without params, the anchor part not allowed
1222 $formattributes = array('method' => $select->method
,
1224 'id' => $select->formid
);
1225 $output = html_writer
::tag('form', $output, $formattributes);
1227 // and finally one more wrapper with class
1228 return html_writer
::tag('div', $output, array('class' => $select->class));
1232 * Returns a form with a url select widget.
1233 * @param array $urls list of urls - array('/course/view.php?id=1'=>'Frontpage', ....)
1234 * @param string $selected selected element
1235 * @param array $nothing
1236 * @param string $formid
1237 * @return string HTML fragment
1239 public function url_select(array $urls, $selected, $nothing=array(''=>'choosedots'), $formid=null) {
1240 $select = new url_select($urls, $selected, $nothing, $formid);
1241 return $this->render($select);
1245 * Internal implementation of url_select rendering
1246 * @param single_select $select
1247 * @return string HTML fragment
1249 protected function render_url_select(url_select
$select) {
1252 $select = clone($select);
1253 if (empty($select->formid
)) {
1254 $select->formid
= html_writer
::random_id('url_select_f');
1257 if (empty($select->attributes
['id'])) {
1258 $select->attributes
['id'] = html_writer
::random_id('url_select');
1261 if ($select->disabled
) {
1262 $select->attributes
['disabled'] = 'disabled';
1265 if ($select->tooltip
) {
1266 $select->attributes
['title'] = $select->tooltip
;
1271 if ($select->label
) {
1272 $output .= html_writer
::label($select->label
, $select->attributes
['id']);
1275 if ($select->helpicon
instanceof help_icon
) {
1276 $output .= $this->render($select->helpicon
);
1277 } else if ($select->helpicon
instanceof old_help_icon
) {
1278 $output .= $this->render($select->helpicon
);
1281 // For security reasons, the script course/jumpto.php requires URL starting with '/'. To keep
1282 // backward compatibility, we are removing heading $CFG->wwwroot from URLs here.
1284 foreach ($select->urls
as $k=>$v) {
1286 // optgroup structure
1287 foreach ($v as $optgrouptitle => $optgroupoptions) {
1288 foreach ($optgroupoptions as $optionurl => $optiontitle) {
1289 if (empty($optionurl)) {
1290 $safeoptionurl = '';
1291 } else if (strpos($optionurl, $CFG->wwwroot
.'/') === 0) {
1292 // debugging('URLs passed to url_select should be in local relative form - please fix the code.', DEBUG_DEVELOPER);
1293 $safeoptionurl = str_replace($CFG->wwwroot
, '', $optionurl);
1294 } else if (strpos($optionurl, '/') !== 0) {
1295 debugging("Invalid url_select urls parameter inside optgroup: url '$optionurl' is not local relative url!");
1298 $safeoptionurl = $optionurl;
1300 $urls[$k][$optgrouptitle][$safeoptionurl] = $optiontitle;
1304 // plain list structure
1306 // nothing selected option
1307 } else if (strpos($k, $CFG->wwwroot
.'/') === 0) {
1308 $k = str_replace($CFG->wwwroot
, '', $k);
1309 } else if (strpos($k, '/') !== 0) {
1310 debugging("Invalid url_select urls parameter: url '$k' is not local relative url!");
1316 $selected = $select->selected
;
1317 if (!empty($selected)) {
1318 if (strpos($select->selected
, $CFG->wwwroot
.'/') === 0) {
1319 $selected = str_replace($CFG->wwwroot
, '', $selected);
1320 } else if (strpos($selected, '/') !== 0) {
1321 debugging("Invalid value of parameter 'selected': url '$selected' is not local relative url!");
1325 $output .= html_writer
::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
1326 $output .= html_writer
::select($urls, 'jump', $selected, $select->nothing
, $select->attributes
);
1328 if (!$select->showbutton
) {
1329 $go = html_writer
::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1330 $output .= html_writer
::tag('noscript', html_writer
::tag('div', $go), array('style'=>'inline'));
1331 $nothing = empty($select->nothing
) ?
false : key($select->nothing
);
1332 $output .= $this->page
->requires
->js_init_call('M.util.init_url_select', array($select->formid
, $select->attributes
['id'], $nothing));
1334 $output .= html_writer
::empty_tag('input', array('type'=>'submit', 'value'=>$select->showbutton
));
1337 // then div wrapper for xhtml strictness
1338 $output = html_writer
::tag('div', $output);
1340 // now the form itself around it
1341 $formattributes = array('method' => 'post',
1342 'action' => new moodle_url('/course/jumpto.php'),
1343 'id' => $select->formid
);
1344 $output = html_writer
::tag('form', $output, $formattributes);
1346 // and finally one more wrapper with class
1347 return html_writer
::tag('div', $output, array('class' => $select->class));
1351 * Returns a string containing a link to the user documentation.
1352 * Also contains an icon by default. Shown to teachers and admin only.
1353 * @param string $path The page link after doc root and language, no leading slash.
1354 * @param string $text The text to be displayed for the link
1357 public function doc_link($path, $text = '') {
1360 $icon = $this->pix_icon('docs', $text, 'moodle', array('class'=>'iconhelp'));
1362 $url = new moodle_url(get_docs_url($path));
1364 $attributes = array('href'=>$url);
1365 if (!empty($CFG->doctonewwindow
)) {
1366 $attributes['id'] = $this->add_action_handler(new popup_action('click', $url));
1369 return html_writer
::tag('a', $icon.$text, $attributes);
1374 * @param string $pix short pix name
1375 * @param string $alt mandatory alt attribute
1376 * @param string $component standard compoennt name like 'moodle', 'mod_forum', etc.
1377 * @param array $attributes htm lattributes
1378 * @return string HTML fragment
1380 public function pix_icon($pix, $alt, $component='moodle', array $attributes = null) {
1381 $icon = new pix_icon($pix, $alt, $component, $attributes);
1382 return $this->render($icon);
1387 * @param pix_icon $icon
1388 * @return string HTML fragment
1390 protected function render_pix_icon(pix_icon
$icon) {
1391 $attributes = $icon->attributes
;
1392 $attributes['src'] = $this->pix_url($icon->pix
, $icon->component
);
1393 return html_writer
::empty_tag('img', $attributes);
1398 * @param pix_emoticon $emoticon
1399 * @return string HTML fragment
1401 protected function render_pix_emoticon(pix_emoticon
$emoticon) {
1402 $attributes = $emoticon->attributes
;
1403 $attributes['src'] = $this->pix_url($emoticon->pix
, $emoticon->component
);
1404 return html_writer
::empty_tag('img', $attributes);
1408 * Produces the html that represents this rating in the UI
1409 * @param $page the page object on which this rating will appear
1411 function render_rating(rating
$rating) {
1413 static $havesetupjavascript = false;
1415 if( $rating->settings
->aggregationmethod
== RATING_AGGREGATE_NONE
){
1416 return null;//ratings are turned off
1419 $useajax = !empty($CFG->enableajax
);
1421 //include required Javascript
1422 if( !$havesetupjavascript && $useajax ) {
1423 $this->page
->requires
->js_init_call('M.core_rating.init');
1424 $havesetupjavascript = true;
1427 //check the item we're rating was created in the assessable time window
1428 $inassessablewindow = true;
1429 if ( $rating->settings
->assesstimestart
&& $rating->settings
->assesstimefinish
) {
1430 if ($rating->itemtimecreated
< $rating->settings
->assesstimestart ||
$rating->itemtimecreated
> $rating->settings
->assesstimefinish
) {
1431 $inassessablewindow = false;
1435 $strrate = get_string("rate", "rating");
1436 $ratinghtml = ''; //the string we'll return
1438 //permissions check - can they view the aggregate?
1439 $canviewaggregate = false;
1441 //if its the current user's item and they have permission to view the aggregate on their own items
1442 if ( $rating->itemuserid
==$USER->id
&& $rating->settings
->permissions
->view
&& $rating->settings
->pluginpermissions
->view
) {
1443 $canviewaggregate = true;
1446 //if the item doesnt belong to anyone or its another user's items and they can see the aggregate on items they don't own
1447 //Note that viewany doesnt mean you can see the aggregate or ratings of your own items
1448 if ( (empty($rating->itemuserid
) or $rating->itemuserid
!=$USER->id
) && $rating->settings
->permissions
->viewany
&& $rating->settings
->pluginpermissions
->viewany
) {
1449 $canviewaggregate = true;
1452 if ($canviewaggregate==true) {
1453 $aggregatelabel = '';
1454 switch ($rating->settings
->aggregationmethod
) {
1455 case RATING_AGGREGATE_AVERAGE
:
1456 $aggregatelabel .= get_string("aggregateavg", "rating");
1458 case RATING_AGGREGATE_COUNT
:
1459 $aggregatelabel .= get_string("aggregatecount", "rating");
1461 case RATING_AGGREGATE_MAXIMUM
:
1462 $aggregatelabel .= get_string("aggregatemax", "rating");
1464 case RATING_AGGREGATE_MINIMUM
:
1465 $aggregatelabel .= get_string("aggregatemin", "rating");
1467 case RATING_AGGREGATE_SUM
:
1468 $aggregatelabel .= get_string("aggregatesum", "rating");
1471 $aggregatelabel .= get_string('labelsep', 'langconfig');
1473 //$scalemax = 0;//no longer displaying scale max
1476 //only display aggregate if aggregation method isn't COUNT
1477 if ($rating->aggregate
&& $rating->settings
->aggregationmethod
!= RATING_AGGREGATE_COUNT
) {
1478 if ($rating->settings
->aggregationmethod
!= RATING_AGGREGATE_SUM
&& is_array($rating->settings
->scale
->scaleitems
)) {
1479 $aggregatestr .= $rating->settings
->scale
->scaleitems
[round($rating->aggregate
)];//round aggregate as we're using it as an index
1481 else { //aggregation is SUM or the scale is numeric
1482 $aggregatestr .= round($rating->aggregate
,1);
1488 $countstr = html_writer
::start_tag('span', array('id'=>"ratingcount{$rating->itemid}"));
1489 if ($rating->count
>0) {
1490 $countstr .= "({$rating->count})";
1492 $countstr .= html_writer
::end_tag('span');
1494 //$aggregatehtml = "{$ratingstr} / $scalemax ({$rating->count}) ";
1495 $aggregatehtml = "<span id='ratingaggregate{$rating->itemid}'>{$aggregatestr}</span> $countstr ";
1497 $ratinghtml .= html_writer
::tag('span', $aggregatelabel, array('class'=>'rating-aggregate-label'));
1498 if ($rating->settings
->permissions
->viewall
&& $rating->settings
->pluginpermissions
->viewall
) {
1499 $url = "/rating/index.php?contextid={$rating->context->id}&itemid={$rating->itemid}&scaleid={$rating->settings->scale->id}";
1500 $nonpopuplink = new moodle_url($url);
1501 $popuplink = new moodle_url("$url&popup=1");
1503 $action = new popup_action('click', $popuplink, 'ratings', array('height' => 400, 'width' => 600));
1504 $ratinghtml .= $this->action_link($nonpopuplink, $aggregatehtml, $action);
1506 $ratinghtml .= $aggregatehtml;
1511 //if the item doesn't belong to the current user, the user has permission to rate
1512 //and we're within the assessable period
1513 if ($rating->itemuserid
!=$USER->id
1514 && $rating->settings
->permissions
->rate
1515 && $rating->settings
->pluginpermissions
->rate
1516 && $inassessablewindow) {
1518 //start the rating form
1519 $formstart = html_writer
::start_tag('form',
1520 array('id'=>"postrating{$rating->itemid}", 'class'=>'postratingform', 'method'=>'post', 'action'=>"{$CFG->wwwroot}/rating/rate.php"));
1522 $formstart .= html_writer
::start_tag('div', array('class'=>'ratingform'));
1524 //add the hidden inputs
1526 $attributes = array('type'=>'hidden', 'class'=>'ratinginput', 'name'=>'contextid', 'value'=>$rating->context
->id
);
1527 $formstart .= html_writer
::empty_tag('input', $attributes);
1529 $attributes['name'] = 'component';
1530 $attributes['value'] = $rating->settings
->component
;
1531 $formstart .= html_writer
::empty_tag('input', $attributes);
1533 $attributes['name'] = 'itemid';
1534 $attributes['value'] = $rating->itemid
;
1535 $formstart .= html_writer
::empty_tag('input', $attributes);
1537 $attributes['name'] = 'scaleid';
1538 $attributes['value'] = $rating->settings
->scale
->id
;
1539 $formstart .= html_writer
::empty_tag('input', $attributes);
1541 $attributes['name'] = 'returnurl';
1542 $attributes['value'] = $rating->settings
->returnurl
;
1543 $formstart .= html_writer
::empty_tag('input', $attributes);
1545 $attributes['name'] = 'rateduserid';
1546 $attributes['value'] = $rating->itemuserid
;
1547 $formstart .= html_writer
::empty_tag('input', $attributes);
1549 $attributes['name'] = 'aggregation';
1550 $attributes['value'] = $rating->settings
->aggregationmethod
;
1551 $formstart .= html_writer
::empty_tag('input', $attributes);
1553 $attributes['name'] = 'sesskey';
1554 $attributes['value'] = sesskey();;
1555 $formstart .= html_writer
::empty_tag('input', $attributes);
1557 if (empty($ratinghtml)) {
1558 $ratinghtml .= $strrate.': ';
1561 $ratinghtml = $formstart.$ratinghtml;
1563 //generate an array of values for numeric scales
1564 $scalearray = $rating->settings
->scale
->scaleitems
;
1565 if (!is_array($scalearray)) { //almost certainly a numerical scale
1566 $intscalearray = intval($scalearray);//just in case they've passed "5" instead of 5
1567 $scalearray = array();
1568 if( is_int($intscalearray) && $intscalearray>0 ) {
1569 for($i=0; $i<=$rating->settings
->scale
->scaleitems
; $i++
) {
1570 $scalearray[$i] = $i;
1575 $scalearray = array(RATING_UNSET_RATING
=> $strrate.'...') +
$scalearray;
1576 $ratinghtml .= html_writer
::select($scalearray, 'rating', $rating->rating
, false, array('class'=>'postratingmenu ratinginput','id'=>'menurating'.$rating->itemid
));
1578 //output submit button
1580 $ratinghtml .= html_writer
::start_tag('span', array('class'=>"ratingsubmit"));
1582 $attributes = array('type'=>'submit', 'class'=>'postratingmenusubmit', 'id'=>'postratingsubmit'.$rating->itemid
, 'value'=>s(get_string('rate', 'rating')));
1583 $ratinghtml .= html_writer
::empty_tag('input', $attributes);
1585 if (is_array($rating->settings
->scale
->scaleitems
)) {
1586 $ratinghtml .= $this->help_icon_scale($rating->settings
->scale
->courseid
, $rating->settings
->scale
);
1588 $ratinghtml .= html_writer
::end_tag('span');
1589 $ratinghtml .= html_writer
::end_tag('div');
1590 $ratinghtml .= html_writer
::end_tag('form');
1597 * Centered heading with attached help button (same title text)
1598 * and optional icon attached
1599 * @param string $text A heading text
1600 * @param string $helpidentifier The keyword that defines a help page
1601 * @param string $component component name
1602 * @param string|moodle_url $icon
1603 * @param string $iconalt icon alt text
1604 * @return string HTML fragment
1606 public function heading_with_help($text, $helpidentifier, $component='moodle', $icon='', $iconalt='') {
1609 $image = $this->pix_icon($icon, $iconalt, $component, array('class'=>'icon'));
1613 if ($helpidentifier) {
1614 $help = $this->help_icon($helpidentifier, $component);
1617 return $this->heading($image.$text.$help, 2, 'main help');
1621 * Print a help icon.
1623 * @deprecated since Moodle 2.0
1624 * @param string $page The keyword that defines a help page
1625 * @param string $title A descriptive text for accessibility only
1626 * @param string $component component name
1627 * @param string|bool $linktext true means use $title as link text, string means link text value
1628 * @return string HTML fragment
1630 public function old_help_icon($helpidentifier, $title, $component = 'moodle', $linktext = '') {
1631 debugging('The method old_help_icon() is deprecated, please fix the code and use help_icon() method instead', DEBUG_DEVELOPER
);
1632 $icon = new old_help_icon($helpidentifier, $title, $component);
1633 if ($linktext === true) {
1634 $icon->linktext
= $title;
1635 } else if (!empty($linktext)) {
1636 $icon->linktext
= $linktext;
1638 return $this->render($icon);
1642 * Implementation of user image rendering.
1643 * @param help_icon $helpicon
1644 * @return string HTML fragment
1646 protected function render_old_help_icon(old_help_icon
$helpicon) {
1649 // first get the help image icon
1650 $src = $this->pix_url('help');
1652 if (empty($helpicon->linktext
)) {
1653 $alt = $helpicon->title
;
1655 $alt = get_string('helpwiththis');
1658 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1659 $output = html_writer
::empty_tag('img', $attributes);
1661 // add the link text if given
1662 if (!empty($helpicon->linktext
)) {
1663 // the spacing has to be done through CSS
1664 $output .= $helpicon->linktext
;
1667 // now create the link around it - we need https on loginhttps pages
1668 $url = new moodle_url($CFG->httpswwwroot
.'/help.php', array('component' => $helpicon->component
, 'identifier' => $helpicon->helpidentifier
, 'lang'=>current_language()));
1670 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1671 $title = get_string('helpprefix2', '', trim($helpicon->title
, ". \t"));
1673 $attributes = array('href'=>$url, 'title'=>$title);
1674 $id = html_writer
::random_id('helpicon');
1675 $attributes['id'] = $id;
1676 $output = html_writer
::tag('a', $output, $attributes);
1678 $this->page
->requires
->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1681 return html_writer
::tag('span', $output, array('class' => 'helplink'));
1685 * Print a help icon.
1687 * @param string $identifier The keyword that defines a help page
1688 * @param string $component component name
1689 * @param string|bool $linktext true means use $title as link text, string means link text value
1690 * @return string HTML fragment
1692 public function help_icon($identifier, $component = 'moodle', $linktext = '') {
1693 $icon = new help_icon($identifier, $component);
1694 $icon->diag_strings();
1695 if ($linktext === true) {
1696 $icon->linktext
= get_string($icon->identifier
, $icon->component
);
1697 } else if (!empty($linktext)) {
1698 $icon->linktext
= $linktext;
1700 return $this->render($icon);
1704 * Implementation of user image rendering.
1705 * @param help_icon $helpicon
1706 * @return string HTML fragment
1708 protected function render_help_icon(help_icon
$helpicon) {
1711 // first get the help image icon
1712 $src = $this->pix_url('help');
1714 $title = get_string($helpicon->identifier
, $helpicon->component
);
1716 if (empty($helpicon->linktext
)) {
1719 $alt = get_string('helpwiththis');
1722 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1723 $output = html_writer
::empty_tag('img', $attributes);
1725 // add the link text if given
1726 if (!empty($helpicon->linktext
)) {
1727 // the spacing has to be done through CSS
1728 $output .= $helpicon->linktext
;
1731 // now create the link around it - we need https on loginhttps pages
1732 $url = new moodle_url($CFG->httpswwwroot
.'/help.php', array('component' => $helpicon->component
, 'identifier' => $helpicon->identifier
, 'lang'=>current_language()));
1734 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1735 $title = get_string('helpprefix2', '', trim($title, ". \t"));
1737 $attributes = array('href'=>$url, 'title'=>$title);
1738 $id = html_writer
::random_id('helpicon');
1739 $attributes['id'] = $id;
1740 $output = html_writer
::tag('a', $output, $attributes);
1742 $this->page
->requires
->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1745 return html_writer
::tag('span', $output, array('class' => 'helplink'));
1749 * Print scale help icon.
1751 * @param int $courseid
1752 * @param object $scale instance
1753 * @return string HTML fragment
1755 public function help_icon_scale($courseid, stdClass
$scale) {
1758 $title = get_string('helpprefix2', '', $scale->name
) .' ('.get_string('newwindow').')';
1760 $icon = $this->pix_icon('help', get_string('scales'), 'moodle', array('class'=>'iconhelp'));
1762 $scaleid = abs($scale->id
);
1764 $link = new moodle_url('/course/scales.php', array('id' => $courseid, 'list' => true, 'scaleid' => $scaleid));
1765 $action = new popup_action('click', $link, 'ratingscale');
1767 return html_writer
::tag('span', $this->action_link($link, $icon, $action), array('class' => 'helplink'));
1771 * Creates and returns a spacer image with optional line break.
1773 * @param array $attributes
1775 * @return string HTML fragment
1777 public function spacer(array $attributes = null, $br = false) {
1778 $attributes = (array)$attributes;
1779 if (empty($attributes['width'])) {
1780 $attributes['width'] = 1;
1782 if (empty($attributes['height'])) {
1783 $attributes['height'] = 1;
1785 $attributes['class'] = 'spacer';
1787 $output = $this->pix_icon('spacer', '', 'moodle', $attributes);
1790 $output .= '<br />';
1797 * Print the specified user's avatar.
1799 * User avatar may be obtained in two ways:
1801 * // Option 1: (shortcut for simple cases, preferred way)
1802 * // $user has come from the DB and has fields id, picture, imagealt, firstname and lastname
1803 * $OUTPUT->user_picture($user, array('popup'=>true));
1806 * $userpic = new user_picture($user);
1807 * // Set properties of $userpic
1808 * $userpic->popup = true;
1809 * $OUTPUT->render($userpic);
1812 * @param object Object with at least fields id, picture, imagealt, firstname, lastname
1813 * If any of these are missing, the database is queried. Avoid this
1814 * if at all possible, particularly for reports. It is very bad for performance.
1815 * @param array $options associative array with user picture options, used only if not a user_picture object,
1817 * - courseid=$this->page->course->id (course id of user profile in link)
1818 * - size=35 (size of image)
1819 * - link=true (make image clickable - the link leads to user profile)
1820 * - popup=false (open in popup)
1821 * - alttext=true (add image alt attribute)
1822 * - class = image class attribute (default 'userpicture')
1823 * @return string HTML fragment
1825 public function user_picture(stdClass
$user, array $options = null) {
1826 $userpicture = new user_picture($user);
1827 foreach ((array)$options as $key=>$value) {
1828 if (array_key_exists($key, $userpicture)) {
1829 $userpicture->$key = $value;
1832 return $this->render($userpicture);
1836 * Internal implementation of user image rendering.
1837 * @param user_picture $userpicture
1840 protected function render_user_picture(user_picture
$userpicture) {
1843 $user = $userpicture->user
;
1845 if ($userpicture->alttext
) {
1846 if (!empty($user->imagealt
)) {
1847 $alt = $user->imagealt
;
1849 $alt = get_string('pictureof', '', fullname($user));
1855 if (empty($userpicture->size
)) {
1858 } else if ($userpicture->size
=== true or $userpicture->size
== 1) {
1861 } else if ($userpicture->size
>= 50) {
1863 $size = $userpicture->size
;
1866 $size = $userpicture->size
;
1869 $class = $userpicture->class;
1871 if ($user->picture
== 1) {
1872 $usercontext = get_context_instance(CONTEXT_USER
, $user->id
);
1873 $src = moodle_url
::make_pluginfile_url($usercontext->id
, 'user', 'icon', NULL, '/', $file);
1875 } else if ($user->picture
== 2) {
1876 //TODO: gravatar user icon support
1878 } else { // Print default user pictures (use theme version if available)
1879 $class .= ' defaultuserpic';
1880 $src = $this->pix_url('u/' . $file);
1883 $attributes = array('src'=>$src, 'alt'=>$alt, 'title'=>$alt, 'class'=>$class, 'width'=>$size, 'height'=>$size);
1885 // get the image html output fisrt
1886 $output = html_writer
::empty_tag('img', $attributes);;
1888 // then wrap it in link if needed
1889 if (!$userpicture->link
) {
1893 if (empty($userpicture->courseid
)) {
1894 $courseid = $this->page
->course
->id
;
1896 $courseid = $userpicture->courseid
;
1899 if ($courseid == SITEID
) {
1900 $url = new moodle_url('/user/profile.php', array('id' => $user->id
));
1902 $url = new moodle_url('/user/view.php', array('id' => $user->id
, 'course' => $courseid));
1905 $attributes = array('href'=>$url);
1907 if ($userpicture->popup
) {
1908 $id = html_writer
::random_id('userpicture');
1909 $attributes['id'] = $id;
1910 $this->add_action_handler(new popup_action('click', $url), $id);
1913 return html_writer
::tag('a', $output, $attributes);
1917 * Internal implementation of file tree viewer items rendering.
1921 public function htmllize_file_tree($dir) {
1922 if (empty($dir['subdirs']) and empty($dir['files'])) {
1926 foreach ($dir['subdirs'] as $subdir) {
1927 $result .= '<li>'.s($subdir['dirname']).' '.$this->htmllize_file_tree($subdir).'</li>';
1929 foreach ($dir['files'] as $file) {
1930 $filename = $file->get_filename();
1931 $result .= '<li><span>'.html_writer
::link($file->fileurl
, $filename).'</span></li>';
1938 * Print the file picker
1941 * $OUTPUT->file_picker($options);
1944 * @param array $options associative array with file manager options
1948 * client_id=>uniqid(),
1949 * acepted_types=>'*',
1950 * return_types=>FILE_INTERNAL,
1951 * context=>$PAGE->context
1952 * @return string HTML fragment
1954 public function file_picker($options) {
1955 $fp = new file_picker($options);
1956 return $this->render($fp);
1959 * Internal implementation of file picker rendering.
1960 * @param file_picker $fp
1963 public function render_file_picker(file_picker
$fp) {
1964 global $CFG, $OUTPUT, $USER;
1965 $options = $fp->options
;
1966 $client_id = $options->client_id
;
1967 $strsaved = get_string('filesaved', 'repository');
1968 $straddfile = get_string('openpicker', 'repository');
1969 $strloading = get_string('loading', 'repository');
1970 $icon_progress = $OUTPUT->pix_icon('i/loading_small', $strloading).'';
1972 $currentfile = $options->currentfile
;
1973 if (empty($currentfile)) {
1974 $currentfile = get_string('nofilesattached', 'repository');
1976 if ($options->maxbytes
) {
1977 $size = $options->maxbytes
;
1979 $size = get_max_upload_file_size();
1984 $maxsize = get_string('maxfilesize', 'moodle', display_size($size));
1986 if ($options->buttonname
) {
1987 $buttonname = ' name="' . $options->buttonname
. '"';
1992 <div class="filemanager-loading mdl-align" id='filepicker-loading-{$client_id}'>
1995 <div id="filepicker-wrapper-{$client_id}" class="mdl-left" style="display:none">
1997 <input type="button" id="filepicker-button-{$client_id}" value="{$straddfile}"{$buttonname}/>
1998 <span> $maxsize </span>
2001 if ($options->env
!= 'url') {
2003 <div id="file_info_{$client_id}" class="mdl-left filepicker-filelist">$currentfile</div>
2011 * Prints the 'Update this Modulename' button that appears on module pages.
2013 * @param string $cmid the course_module id.
2014 * @param string $modulename the module name, eg. "forum", "quiz" or "workshop"
2015 * @return string the HTML for the button, if this user has permission to edit it, else an empty string.
2017 public function update_module_button($cmid, $modulename) {
2019 if (has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_MODULE
, $cmid))) {
2020 $modulename = get_string('modulename', $modulename);
2021 $string = get_string('updatethis', '', $modulename);
2022 $url = new moodle_url("$CFG->wwwroot/course/mod.php", array('update' => $cmid, 'return' => true, 'sesskey' => sesskey()));
2023 return $this->single_button($url, $string);
2030 * Prints a "Turn editing on/off" button in a form.
2031 * @param moodle_url $url The URL + params to send through when clicking the button
2032 * @return string HTML the button
2034 public function edit_button(moodle_url
$url) {
2036 $url->param('sesskey', sesskey());
2037 if ($this->page
->user_is_editing()) {
2038 $url->param('edit', 'off');
2039 $editstring = get_string('turneditingoff');
2041 $url->param('edit', 'on');
2042 $editstring = get_string('turneditingon');
2045 return $this->single_button($url, $editstring);
2049 * Prints a simple button to close a window
2051 * @param string $text The lang string for the button's label (already output from get_string())
2052 * @return string html fragment
2054 public function close_window_button($text='') {
2056 $text = get_string('closewindow');
2058 $button = new single_button(new moodle_url('#'), $text, 'get');
2059 $button->add_action(new component_action('click', 'close_window'));
2061 return $this->container($this->render($button), 'closewindow');
2065 * Output an error message. By default wraps the error message in <span class="error">.
2066 * If the error message is blank, nothing is output.
2067 * @param string $message the error message.
2068 * @return string the HTML to output.
2070 public function error_text($message) {
2071 if (empty($message)) {
2074 return html_writer
::tag('span', $message, array('class' => 'error'));
2078 * Do not call this function directly.
2080 * To terminate the current script with a fatal error, call the {@link print_error}
2081 * function, or throw an exception. Doing either of those things will then call this
2082 * function to display the error, before terminating the execution.
2084 * @param string $message The message to output
2085 * @param string $moreinfourl URL where more info can be found about the error
2086 * @param string $link Link for the Continue button
2087 * @param array $backtrace The execution backtrace
2088 * @param string $debuginfo Debugging information
2089 * @return string the HTML to output.
2091 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2097 if ($this->has_started()) {
2098 // we can not always recover properly here, we have problems with output buffering,
2099 // html tables, etc.
2100 $output .= $this->opencontainers
->pop_all_but_last();
2103 // It is really bad if library code throws exception when output buffering is on,
2104 // because the buffered text would be printed before our start of page.
2105 // NOTE: this hack might be behave unexpectedly in case output buffering is enabled in PHP.ini
2106 error_reporting(0); // disable notices from gzip compression, etc.
2107 while (ob_get_level() > 0) {
2108 $buff = ob_get_clean();
2109 if ($buff === false) {
2114 error_reporting($CFG->debug
);
2116 // Header not yet printed
2117 if (isset($_SERVER['SERVER_PROTOCOL'])) {
2118 // server protocol should be always present, because this render
2119 // can not be used from command line or when outputting custom XML
2120 @header
($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
2122 $this->page
->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2123 $this->page
->set_url('/'); // no url
2124 //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
2125 $this->page
->set_title(get_string('error'));
2126 $this->page
->set_heading($this->page
->course
->fullname
);
2127 $output .= $this->header();
2130 $message = '<p class="errormessage">' . $message . '</p>'.
2131 '<p class="errorcode"><a href="' . $moreinfourl . '">' .
2132 get_string('moreinformation') . '</a></p>';
2133 $output .= $this->box($message, 'errorbox');
2135 if (debugging('', DEBUG_DEVELOPER
)) {
2136 if (!empty($debuginfo)) {
2137 $debuginfo = s($debuginfo); // removes all nasty JS
2138 $debuginfo = str_replace("\n", '<br />', $debuginfo); // keep newlines
2139 $output .= $this->notification('<strong>Debug info:</strong> '.$debuginfo, 'notifytiny');
2141 if (!empty($backtrace)) {
2142 $output .= $this->notification('<strong>Stack trace:</strong> '.format_backtrace($backtrace), 'notifytiny');
2144 if ($obbuffer !== '' ) {
2145 $output .= $this->notification('<strong>Output buffer:</strong> '.s($obbuffer), 'notifytiny');
2149 if (!empty($link)) {
2150 $output .= $this->continue_button($link);
2153 $output .= $this->footer();
2155 // Padding to encourage IE to display our error page, rather than its own.
2156 $output .= str_repeat(' ', 512);
2162 * Output a notification (that is, a status message about something that has
2165 * @param string $message the message to print out
2166 * @param string $classes normally 'notifyproblem' or 'notifysuccess'.
2167 * @return string the HTML to output.
2169 public function notification($message, $classes = 'notifyproblem') {
2170 return html_writer
::tag('div', clean_text($message), array('class' => renderer_base
::prepare_classes($classes)));
2174 * Print a continue button that goes to a particular URL.
2176 * @param string|moodle_url $url The url the button goes to.
2177 * @return string the HTML to output.
2179 public function continue_button($url) {
2180 if (!($url instanceof moodle_url
)) {
2181 $url = new moodle_url($url);
2183 $button = new single_button($url, get_string('continue'), 'get');
2184 $button->class = 'continuebutton';
2186 return $this->render($button);
2190 * Prints a single paging bar to provide access to other pages (usually in a search)
2192 * @param int $totalcount The total number of entries available to be paged through
2193 * @param int $page The page you are currently viewing
2194 * @param int $perpage The number of entries that should be shown per page
2195 * @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
2196 * @param string $pagevar name of page parameter that holds the page number
2197 * @return string the HTML to output.
2199 public function paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
2200 $pb = new paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar);
2201 return $this->render($pb);
2205 * Internal implementation of paging bar rendering.
2206 * @param paging_bar $pagingbar
2209 protected function render_paging_bar(paging_bar
$pagingbar) {
2211 $pagingbar = clone($pagingbar);
2212 $pagingbar->prepare($this, $this->page
, $this->target
);
2214 if ($pagingbar->totalcount
> $pagingbar->perpage
) {
2215 $output .= get_string('page') . ':';
2217 if (!empty($pagingbar->previouslink
)) {
2218 $output .= ' (' . $pagingbar->previouslink
. ') ';
2221 if (!empty($pagingbar->firstlink
)) {
2222 $output .= ' ' . $pagingbar->firstlink
. ' ...';
2225 foreach ($pagingbar->pagelinks
as $link) {
2226 $output .= "  $link";
2229 if (!empty($pagingbar->lastlink
)) {
2230 $output .= ' ...' . $pagingbar->lastlink
. ' ';
2233 if (!empty($pagingbar->nextlink
)) {
2234 $output .= '  (' . $pagingbar->nextlink
. ')';
2238 return html_writer
::tag('div', $output, array('class' => 'paging'));
2242 * Output the place a skip link goes to.
2243 * @param string $id The target name from the corresponding $PAGE->requires->skip_link_to($target) call.
2244 * @return string the HTML to output.
2246 public function skip_link_target($id = null) {
2247 return html_writer
::tag('span', '', array('id' => $id));
2252 * @param string $text The text of the heading
2253 * @param int $level The level of importance of the heading. Defaulting to 2
2254 * @param string $classes A space-separated list of CSS classes
2255 * @param string $id An optional ID
2256 * @return string the HTML to output.
2258 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2259 $level = (integer) $level;
2260 if ($level < 1 or $level > 6) {
2261 throw new coding_exception('Heading level must be an integer between 1 and 6.');
2263 return html_writer
::tag('h' . $level, $text, array('id' => $id, 'class' => renderer_base
::prepare_classes($classes)));
2268 * @param string $contents The contents of the box
2269 * @param string $classes A space-separated list of CSS classes
2270 * @param string $id An optional ID
2271 * @return string the HTML to output.
2273 public function box($contents, $classes = 'generalbox', $id = null) {
2274 return $this->box_start($classes, $id) . $contents . $this->box_end();
2278 * Outputs the opening section of a box.
2279 * @param string $classes A space-separated list of CSS classes
2280 * @param string $id An optional ID
2281 * @return string the HTML to output.
2283 public function box_start($classes = 'generalbox', $id = null) {
2284 $this->opencontainers
->push('box', html_writer
::end_tag('div'));
2285 return html_writer
::start_tag('div', array('id' => $id,
2286 'class' => 'box ' . renderer_base
::prepare_classes($classes)));
2290 * Outputs the closing section of a box.
2291 * @return string the HTML to output.
2293 public function box_end() {
2294 return $this->opencontainers
->pop('box');
2298 * Outputs a container.
2299 * @param string $contents The contents of the box
2300 * @param string $classes A space-separated list of CSS classes
2301 * @param string $id An optional ID
2302 * @return string the HTML to output.
2304 public function container($contents, $classes = null, $id = null) {
2305 return $this->container_start($classes, $id) . $contents . $this->container_end();
2309 * Outputs the opening section of a container.
2310 * @param string $classes A space-separated list of CSS classes
2311 * @param string $id An optional ID
2312 * @return string the HTML to output.
2314 public function container_start($classes = null, $id = null) {
2315 $this->opencontainers
->push('container', html_writer
::end_tag('div'));
2316 return html_writer
::start_tag('div', array('id' => $id,
2317 'class' => renderer_base
::prepare_classes($classes)));
2321 * Outputs the closing section of a container.
2322 * @return string the HTML to output.
2324 public function container_end() {
2325 return $this->opencontainers
->pop('container');
2329 * Make nested HTML lists out of the items
2331 * The resulting list will look something like this:
2335 * <<li>><div class='tree_item parent'>(item contents)</div>
2337 * <<li>><div class='tree_item'>(item contents)</div><</li>>
2343 * @param array[]tree_item $items
2344 * @param array[string]string $attrs html attributes passed to the top of
2346 * @return string HTML
2348 function tree_block_contents($items, $attrs=array()) {
2349 // exit if empty, we don't want an empty ul element
2350 if (empty($items)) {
2353 // array of nested li elements
2355 foreach ($items as $item) {
2356 // this applies to the li item which contains all child lists too
2357 $content = $item->content($this);
2358 $liclasses = array($item->get_css_type());
2359 if (!$item->forceopen ||
(!$item->forceopen
&& $item->collapse
) ||
($item->children
->count()==0 && $item->nodetype
==navigation_node
::NODETYPE_BRANCH
)) {
2360 $liclasses[] = 'collapsed';
2362 if ($item->isactive
=== true) {
2363 $liclasses[] = 'current_branch';
2365 $liattr = array('class'=>join(' ',$liclasses));
2366 // class attribute on the div item which only contains the item content
2367 $divclasses = array('tree_item');
2368 if ($item->children
->count()>0 ||
$item->nodetype
==navigation_node
::NODETYPE_BRANCH
) {
2369 $divclasses[] = 'branch';
2371 $divclasses[] = 'leaf';
2373 if (!empty($item->classes
) && count($item->classes
)>0) {
2374 $divclasses[] = join(' ', $item->classes
);
2376 $divattr = array('class'=>join(' ', $divclasses));
2377 if (!empty($item->id
)) {
2378 $divattr['id'] = $item->id
;
2380 $content = html_writer
::tag('p', $content, $divattr) . $this->tree_block_contents($item->children
);
2381 if (!empty($item->preceedwithhr
) && $item->preceedwithhr
===true) {
2382 $content = html_writer
::empty_tag('hr') . $content;
2384 $content = html_writer
::tag('li', $content, $liattr);
2387 return html_writer
::tag('ul', implode("\n", $lis), $attrs);
2391 * Return the navbar content so that it can be echoed out by the layout
2392 * @return string XHTML navbar
2394 public function navbar() {
2395 $items = $this->page
->navbar
->get_items();
2397 $htmlblocks = array();
2398 // Iterate the navarray and display each node
2399 $itemcount = count($items);
2400 $separator = get_separator();
2401 for ($i=0;$i < $itemcount;$i++
) {
2403 $item->hideicon
= true;
2405 $content = html_writer
::tag('li', $this->render($item));
2407 $content = html_writer
::tag('li', $separator.$this->render($item));
2409 $htmlblocks[] = $content;
2412 //accessibility: heading for navbar list (MDL-20446)
2413 $navbarcontent = html_writer
::tag('span', get_string('pagepath'), array('class'=>'accesshide'));
2414 $navbarcontent .= html_writer
::tag('ul', join('', $htmlblocks));
2416 return $navbarcontent;
2419 protected function render_navigation_node(navigation_node
$item) {
2420 $content = $item->get_content();
2421 $title = $item->get_title();
2422 if ($item->icon
instanceof renderable
&& !$item->hideicon
) {
2423 $icon = $this->render($item->icon
);
2424 $content = $icon.$content; // use CSS for spacing of icons
2426 if ($item->helpbutton
!== null) {
2427 $content = trim($item->helpbutton
).html_writer
::tag('span', $content, array('class'=>'clearhelpbutton'));
2429 if ($content === '') {
2432 if ($item->action
instanceof action_link
) {
2433 $link = $item->action
;
2434 if ($item->hidden
) {
2435 $link->add_class('dimmed');
2437 $link->text
= $content.$link->text
; // add help icon
2438 $content = $this->render($link);
2439 } else if ($item->action
instanceof moodle_url
) {
2440 $attributes = array();
2441 if ($title !== '') {
2442 $attributes['title'] = $title;
2444 if ($item->hidden
) {
2445 $attributes['class'] = 'dimmed_text';
2447 $content = html_writer
::link($item->action
, $content, $attributes);
2449 } else if (is_string($item->action
) ||
empty($item->action
)) {
2450 $attributes = array();
2451 if ($title !== '') {
2452 $attributes['title'] = $title;
2454 if ($item->hidden
) {
2455 $attributes['class'] = 'dimmed_text';
2457 $content = html_writer
::tag('span', $content, $attributes);
2463 * Accessibility: Right arrow-like character is
2464 * used in the breadcrumb trail, course navigation menu
2465 * (previous/next activity), calendar, and search forum block.
2466 * If the theme does not set characters, appropriate defaults
2467 * are set automatically. Please DO NOT
2468 * use < > » - these are confusing for blind users.
2471 public function rarrow() {
2472 return $this->page
->theme
->rarrow
;
2476 * Accessibility: Right arrow-like character is
2477 * used in the breadcrumb trail, course navigation menu
2478 * (previous/next activity), calendar, and search forum block.
2479 * If the theme does not set characters, appropriate defaults
2480 * are set automatically. Please DO NOT
2481 * use < > » - these are confusing for blind users.
2484 public function larrow() {
2485 return $this->page
->theme
->larrow
;
2489 * Returns the custom menu if one has been set
2491 * A custom menu can be configured by browsing to
2492 * Settings: Administration > Appearance > Themes > Theme settings
2493 * and then configuring the custommenu config setting as described.
2497 public function custom_menu() {
2499 if (empty($CFG->custommenuitems
)) {
2502 $custommenu = new custom_menu();
2503 return $this->render_custom_menu($custommenu);
2507 * Renders a custom menu object (located in outputcomponents.php)
2509 * The custom menu this method produces makes use of the YUI3 menunav widget
2510 * and requires very specific html elements and classes.
2512 * @staticvar int $menucount
2513 * @param custom_menu $menu
2516 protected function render_custom_menu(custom_menu
$menu) {
2517 static $menucount = 0;
2518 // If the menu has no children return an empty string
2519 if (!$menu->has_children()) {
2522 // Increment the menu count. This is used for ID's that get worked with
2523 // in JavaScript as is essential
2525 // Initialise this custom menu
2526 $this->page
->requires
->js_init_call('M.core_custom_menu.init', array('custom_menu_'.$menucount));
2527 // Build the root nodes as required by YUI
2528 $content = html_writer
::start_tag('div', array('id'=>'custom_menu_'.$menucount, 'class'=>'yui3-menu yui3-menu-horizontal javascript-disabled'));
2529 $content .= html_writer
::start_tag('div', array('class'=>'yui3-menu-content'));
2530 $content .= html_writer
::start_tag('ul');
2531 // Render each child
2532 foreach ($menu->get_children() as $item) {
2533 $content .= $this->render_custom_menu_item($item);
2535 // Close the open tags
2536 $content .= html_writer
::end_tag('ul');
2537 $content .= html_writer
::end_tag('div');
2538 $content .= html_writer
::end_tag('div');
2539 // Return the custom menu
2544 * Renders a custom menu node as part of a submenu
2546 * The custom menu this method produces makes use of the YUI3 menunav widget
2547 * and requires very specific html elements and classes.
2549 * @see render_custom_menu()
2551 * @staticvar int $submenucount
2552 * @param custom_menu_item $menunode
2555 protected function render_custom_menu_item(custom_menu_item
$menunode) {
2556 // Required to ensure we get unique trackable id's
2557 static $submenucount = 0;
2558 if ($menunode->has_children()) {
2559 // If the child has menus render it as a sub menu
2561 $content = html_writer
::start_tag('li');
2562 if ($menunode->get_url() !== null) {
2563 $url = $menunode->get_url();
2565 $url = '#cm_submenu_'.$submenucount;
2567 $content .= html_writer
::link($url, $menunode->get_text(), array('class'=>'yui3-menu-label', 'title'=>$menunode->get_title()));
2568 $content .= html_writer
::start_tag('div', array('id'=>'cm_submenu_'.$submenucount, 'class'=>'yui3-menu custom_menu_submenu'));
2569 $content .= html_writer
::start_tag('div', array('class'=>'yui3-menu-content'));
2570 $content .= html_writer
::start_tag('ul');
2571 foreach ($menunode->get_children() as $menunode) {
2572 $content .= $this->render_custom_menu_item($menunode);
2574 $content .= html_writer
::end_tag('ul');
2575 $content .= html_writer
::end_tag('div');
2576 $content .= html_writer
::end_tag('div');
2577 $content .= html_writer
::end_tag('li');
2579 // The node doesn't have children so produce a final menuitem
2580 $content = html_writer
::start_tag('li', array('class'=>'yui3-menuitem'));
2581 if ($menunode->get_url() !== null) {
2582 $url = $menunode->get_url();
2586 $content .= html_writer
::link($url, $menunode->get_text(), array('class'=>'yui3-menuitem-content', 'title'=>$menunode->get_title()));
2587 $content .= html_writer
::end_tag('li');
2589 // Return the sub menu
2598 * A renderer that generates output for command-line scripts.
2600 * The implementation of this renderer is probably incomplete.
2602 * @copyright 2009 Tim Hunt
2603 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2606 class core_renderer_cli
extends core_renderer
{
2608 * Returns the page header.
2609 * @return string HTML fragment
2611 public function header() {
2612 return $this->page
->heading
. "\n";
2616 * Returns a template fragment representing a Heading.
2617 * @param string $text The text of the heading
2618 * @param int $level The level of importance of the heading
2619 * @param string $classes A space-separated list of CSS classes
2620 * @param string $id An optional ID
2621 * @return string A template fragment for a heading
2623 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2627 return '=>' . $text;
2629 return '-->' . $text;
2636 * Returns a template fragment representing a fatal error.
2637 * @param string $message The message to output
2638 * @param string $moreinfourl URL where more info can be found about the error
2639 * @param string $link Link for the Continue button
2640 * @param array $backtrace The execution backtrace
2641 * @param string $debuginfo Debugging information
2642 * @return string A template fragment for a fatal error
2644 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2645 $output = "!!! $message !!!\n";
2647 if (debugging('', DEBUG_DEVELOPER
)) {
2648 if (!empty($debuginfo)) {
2649 $output .= $this->notification($debuginfo, 'notifytiny');
2651 if (!empty($backtrace)) {
2652 $output .= $this->notification('Stack trace: ' . format_backtrace($backtrace, true), 'notifytiny');
2660 * Returns a template fragment representing a notification.
2661 * @param string $message The message to include
2662 * @param string $classes A space-separated list of CSS classes
2663 * @return string A template fragment for a notification
2665 public function notification($message, $classes = 'notifyproblem') {
2666 $message = clean_text($message);
2667 if ($classes === 'notifysuccess') {
2668 return "++ $message ++\n";
2670 return "!! $message !!\n";
2676 * A renderer that generates output for ajax scripts.
2678 * This renderer prevents accidental sends back only json
2679 * encoded error messages, all other output is ignored.
2681 * @copyright 2010 Petr Skoda
2682 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2685 class core_renderer_ajax
extends core_renderer
{
2687 * Returns a template fragment representing a fatal error.
2688 * @param string $message The message to output
2689 * @param string $moreinfourl URL where more info can be found about the error
2690 * @param string $link Link for the Continue button
2691 * @param array $backtrace The execution backtrace
2692 * @param string $debuginfo Debugging information
2693 * @return string A template fragment for a fatal error
2695 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2698 $this->page
->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2700 $e = new stdClass();
2701 $e->error
= $message;
2702 $e->stacktrace
= NULL;
2703 $e->debuginfo
= NULL;
2704 $e->reproductionlink
= NULL;
2705 if (!empty($CFG->debug
) and $CFG->debug
>= DEBUG_DEVELOPER
) {
2706 $e->reproductionlink
= $link;
2707 if (!empty($debuginfo)) {
2708 $e->debuginfo
= $debuginfo;
2710 if (!empty($backtrace)) {
2711 $e->stacktrace
= format_backtrace($backtrace, true);
2715 return json_encode($e);
2718 public function notification($message, $classes = 'notifyproblem') {
2721 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
2724 public function header() {
2725 // unfortunately YUI iframe upload does not support application/json
2726 if (!empty($_FILES)) {
2727 @header
('Content-type: text/plain; charset=utf-8');
2729 @header
('Content-type: application/json; charset=utf-8');
2732 /// Headers to make it not cacheable and json
2733 @header
('Cache-Control: no-store, no-cache, must-revalidate');
2734 @header
('Cache-Control: post-check=0, pre-check=0', false);
2735 @header
('Pragma: no-cache');
2736 @header
('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
2737 @header
('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
2738 @header
('Accept-Ranges: none');
2741 public function footer() {
2744 public function heading($text, $level = 2, $classes = 'main', $id = null) {