backup MDL-22142 Several changes to the backup UI and it's classes as noted below
[moodle.git] / lib / outputrenderers.php
CommitLineData
d9c8f425 1<?php
2
3// This file is part of Moodle - http://moodle.org/
4//
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.
9//
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.
14//
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/>.
17
18/**
19 * Classes for rendering HTML output for Moodle.
20 *
21 * Please see http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML
22 * for an overview.
23 *
24 * @package moodlecore
25 * @copyright 2009 Tim Hunt
26 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
27 */
28
29/**
30 * Simple base class for Moodle renderers.
31 *
32 * Tracks the xhtml_container_stack to use, which is passed in in the constructor.
33 *
34 * Also has methods to facilitate generating HTML output.
35 *
36 * @copyright 2009 Tim Hunt
37 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
38 * @since Moodle 2.0
39 */
78946b9b 40class renderer_base {
d9c8f425 41 /** @var xhtml_container_stack the xhtml_container_stack to use. */
42 protected $opencontainers;
43 /** @var moodle_page the page we are rendering for. */
44 protected $page;
c927e35c
PS
45 /** @var requested rendering target conatnt */
46 protected $target;
d9c8f425 47
48 /**
49 * Constructor
50 * @param moodle_page $page the page we are doing output for.
c927e35c 51 * @param string $target one of rendering target constants
d9c8f425 52 */
c927e35c 53 public function __construct(moodle_page $page, $target) {
d9c8f425 54 $this->opencontainers = $page->opencontainers;
55 $this->page = $page;
c927e35c 56 $this->target = $target;
d9c8f425 57 }
58
59 /**
5d0c95a5
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60 * Returns rendered widget.
61 * @param renderable $widget intence with renderable interface
62 * @return string
d9c8f425 63 */
5d0c95a5 64 public function render(renderable $widget) {
2cf81209 65 $rendermethod = 'render_'.get_class($widget);
5d0c95a5
PS
66 if (method_exists($this, $rendermethod)) {
67 return $this->$rendermethod($widget);
68 }
69 throw new coding_exception('Can not render widget, renderer method ('.$rendermethod.') not found.');
d9c8f425 70 }
71
72 /**
5d0c95a5 73 * Adds JS handlers needed for event execution for one html element id
5d0c95a5 74 * @param component_action $actions
c80877aa
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75 * @param string $id
76 * @return string id of element, either original submitted or random new if not supplied
d9c8f425 77 */
c80877aa
PS
78 public function add_action_handler(component_action $action, $id=null) {
79 if (!$id) {
80 $id = html_writer::random_id($action->event);
81 }
d96d8f03 82 $this->page->requires->event_handler("#$id", $action->event, $action->jsfunction, $action->jsfunctionargs);
c80877aa 83 return $id;
d9c8f425 84 }
85
86 /**
5d0c95a5
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87 * Have we started output yet?
88 * @return boolean true if the header has been printed.
d9c8f425 89 */
5d0c95a5
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90 public function has_started() {
91 return $this->page->state >= moodle_page::STATE_IN_BODY;
d9c8f425 92 }
93
94 /**
95 * Given an array or space-separated list of classes, prepares and returns the HTML class attribute value
96 * @param mixed $classes Space-separated string or array of classes
97 * @return string HTML class attribute value
98 */
99 public static function prepare_classes($classes) {
100 if (is_array($classes)) {
101 return implode(' ', array_unique($classes));
102 }
103 return $classes;
104 }
105
d9c8f425 106 /**
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107 * Return the moodle_url for an image.
108 * The exact image location and extension is determined
109 * automatically by searching for gif|png|jpg|jpeg, please
110 * note there can not be diferent images with the different
111 * extension. The imagename is for historical reasons
112 * a relative path name, it may be changed later for core
113 * images. It is recommended to not use subdirectories
114 * in plugin and theme pix directories.
d9c8f425 115 *
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116 * There are three types of images:
117 * 1/ theme images - stored in theme/mytheme/pix/,
118 * use component 'theme'
119 * 2/ core images - stored in /pix/,
120 * overridden via theme/mytheme/pix_core/
121 * 3/ plugin images - stored in mod/mymodule/pix,
122 * overridden via theme/mytheme/pix_plugins/mod/mymodule/,
123 * example: pix_url('comment', 'mod_glossary')
124 *
125 * @param string $imagename the pathname of the image
126 * @param string $component full plugin name (aka component) or 'theme'
78946b9b 127 * @return moodle_url
d9c8f425 128 */
c927e35c 129 public function pix_url($imagename, $component = 'moodle') {
c39e5ba2 130 return $this->page->theme->pix_url($imagename, $component);
d9c8f425 131 }
d9c8f425 132}
133
c927e35c 134
75590935
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135/**
136 * Basis for all plugin renderers.
137 *
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138 * @author Petr Skoda (skodak)
139 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
140 * @since Moodle 2.0
75590935
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141 */
142class plugin_renderer_base extends renderer_base {
143 /**
144 * A reference to the current general renderer probably {@see core_renderer}
145 * @var renderer_base
146 */
147 protected $output;
148
149 /**
150 * Contructor method, calls the parent constructor
151 * @param moodle_page $page
c927e35c 152 * @param string $target one of rendering target constants
75590935 153 */
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154 public function __construct(moodle_page $page, $target) {
155 $this->output = $page->get_renderer('core', null, $target);
156 parent::__construct($page, $target);
75590935 157 }
ff5265c6 158
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159 /**
160 * Returns rendered widget.
161 * @param renderable $widget intence with renderable interface
162 * @return string
163 */
164 public function render(renderable $widget) {
165 $rendermethod = 'render_'.get_class($widget);
166 if (method_exists($this, $rendermethod)) {
167 return $this->$rendermethod($widget);
168 }
169 // pass to core renderer if method not found here
170 $this->output->render($widget);
171 }
172
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173 /**
174 * Magic method used to pass calls otherwise meant for the standard renderer
175 * to it to ensure we don't go causing unnessecary greif.
176 *
177 * @param string $method
178 * @param array $arguments
179 * @return mixed
180 */
181 public function __call($method, $arguments) {
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182 if (method_exists('renderer_base', $method)) {
183 throw new coding_exception('Protected method called against '.__CLASS__.' :: '.$method);
184 }
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185 if (method_exists($this->output, $method)) {
186 return call_user_func_array(array($this->output, $method), $arguments);
187 } else {
188 throw new coding_exception('Unknown method called against '.__CLASS__.' :: '.$method);
189 }
190 }
75590935 191}
d9c8f425 192
c927e35c 193
d9c8f425 194/**
78946b9b 195 * The standard implementation of the core_renderer interface.
d9c8f425 196 *
197 * @copyright 2009 Tim Hunt
198 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
199 * @since Moodle 2.0
200 */
78946b9b 201class core_renderer extends renderer_base {
d9c8f425 202 /** @var string used in {@link header()}. */
203 const PERFORMANCE_INFO_TOKEN = '%%PERFORMANCEINFO%%';
204 /** @var string used in {@link header()}. */
205 const END_HTML_TOKEN = '%%ENDHTML%%';
206 /** @var string used in {@link header()}. */
207 const MAIN_CONTENT_TOKEN = '[MAIN CONTENT GOES HERE]';
208 /** @var string used to pass information from {@link doctype()} to {@link standard_head_html()}. */
209 protected $contenttype;
210 /** @var string used by {@link redirect_message()} method to communicate with {@link header()}. */
211 protected $metarefreshtag = '';
212
213 /**
214 * Get the DOCTYPE declaration that should be used with this page. Designed to
215 * be called in theme layout.php files.
216 * @return string the DOCTYPE declaration (and any XML prologue) that should be used.
217 */
218 public function doctype() {
219 global $CFG;
220
221 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' . "\n";
222 $this->contenttype = 'text/html; charset=utf-8';
223
224 if (empty($CFG->xmlstrictheaders)) {
225 return $doctype;
226 }
227
228 // We want to serve the page with an XML content type, to force well-formedness errors to be reported.
229 $prolog = '<?xml version="1.0" encoding="utf-8"?>' . "\n";
230 if (isset($_SERVER['HTTP_ACCEPT']) && strpos($_SERVER['HTTP_ACCEPT'], 'application/xhtml+xml') !== false) {
231 // Firefox and other browsers that can cope natively with XHTML.
232 $this->contenttype = 'application/xhtml+xml; charset=utf-8';
233
234 } else if (preg_match('/MSIE.*Windows NT/', $_SERVER['HTTP_USER_AGENT'])) {
235 // IE can't cope with application/xhtml+xml, but it will cope if we send application/xml with an XSL stylesheet.
236 $this->contenttype = 'application/xml; charset=utf-8';
237 $prolog .= '<?xml-stylesheet type="text/xsl" href="' . $CFG->httpswwwroot . '/lib/xhtml.xsl"?>' . "\n";
238
239 } else {
240 $prolog = '';
241 }
242
243 return $prolog . $doctype;
244 }
245
246 /**
247 * The attributes that should be added to the <html> tag. Designed to
248 * be called in theme layout.php files.
249 * @return string HTML fragment.
250 */
251 public function htmlattributes() {
252 return get_html_lang(true) . ' xmlns="http://www.w3.org/1999/xhtml"';
253 }
254
255 /**
256 * The standard tags (meta tags, links to stylesheets and JavaScript, etc.)
257 * that should be included in the <head> tag. Designed to be called in theme
258 * layout.php files.
259 * @return string HTML fragment.
260 */
261 public function standard_head_html() {
b5bbeaf0 262 global $CFG, $SESSION;
d9c8f425 263 $output = '';
264 $output .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . "\n";
265 $output .= '<meta name="keywords" content="moodle, ' . $this->page->title . '" />' . "\n";
266 if (!$this->page->cacheable) {
267 $output .= '<meta http-equiv="pragma" content="no-cache" />' . "\n";
268 $output .= '<meta http-equiv="expires" content="0" />' . "\n";
269 }
270 // This is only set by the {@link redirect()} method
271 $output .= $this->metarefreshtag;
272
273 // Check if a periodic refresh delay has been set and make sure we arn't
274 // already meta refreshing
275 if ($this->metarefreshtag=='' && $this->page->periodicrefreshdelay!==null) {
276 $output .= '<meta http-equiv="refresh" content="'.$this->page->periodicrefreshdelay.';url='.$this->page->url->out().'" />';
277 }
278
7d2a0492 279 $this->page->requires->js_function_call('setTimeout', array('fix_column_widths()', 20));
d9c8f425 280
281 $focus = $this->page->focuscontrol;
282 if (!empty($focus)) {
283 if (preg_match("#forms\['([a-zA-Z0-9]+)'\].elements\['([a-zA-Z0-9]+)'\]#", $focus, $matches)) {
284 // This is a horrifically bad way to handle focus but it is passed in
285 // through messy formslib::moodleform
7d2a0492 286 $this->page->requires->js_function_call('old_onload_focus', array($matches[1], $matches[2]));
d9c8f425 287 } else if (strpos($focus, '.')!==false) {
288 // Old style of focus, bad way to do it
289 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);
290 $this->page->requires->js_function_call('old_onload_focus', explode('.', $focus, 2));
291 } else {
292 // Focus element with given id
7d2a0492 293 $this->page->requires->js_function_call('focuscontrol', array($focus));
d9c8f425 294 }
295 }
296
78946b9b
PS
297 // Get the theme stylesheet - this has to be always first CSS, this loads also styles.css from all plugins;
298 // any other custom CSS can not be overridden via themes and is highly discouraged
efaa4c08 299 $urls = $this->page->theme->css_urls($this->page);
78946b9b 300 foreach ($urls as $url) {
c0467479 301 $this->page->requires->css_theme($url);
78946b9b
PS
302 }
303
04c01408 304 // Get the theme javascript head and footer
04c01408 305 $jsurl = $this->page->theme->javascript_url(true);
baeb20bb
PS
306 $this->page->requires->js($jsurl, true);
307 $jsurl = $this->page->theme->javascript_url(false);
8ce04d51 308 $this->page->requires->js($jsurl);
5d0c95a5 309
78946b9b 310 // Perform a browser environment check for the flash version. Should only run once per login session.
2c0d7839 311 if (!NO_MOODLE_COOKIES && isloggedin() && !empty($CFG->excludeoldflashclients) && empty($SESSION->flashversion)) {
4abd5b9b
PS
312 $this->page->requires->js('/lib/swfobject/swfobject.js');
313 $this->page->requires->js_init_call('M.core_flashdetect.init');
b5bbeaf0 314 }
315
d9c8f425 316 // Get any HTML from the page_requirements_manager.
945f19f7 317 $output .= $this->page->requires->get_head_code($this->page, $this);
d9c8f425 318
319 // List alternate versions.
320 foreach ($this->page->alternateversions as $type => $alt) {
5d0c95a5 321 $output .= html_writer::empty_tag('link', array('rel' => 'alternate',
d9c8f425 322 'type' => $type, 'title' => $alt->title, 'href' => $alt->url));
323 }
324
325 return $output;
326 }
327
328 /**
329 * The standard tags (typically skip links) that should be output just inside
330 * the start of the <body> tag. Designed to be called in theme layout.php files.
331 * @return string HTML fragment.
332 */
333 public function standard_top_of_body_html() {
334 return $this->page->requires->get_top_of_body_code();
335 }
336
337 /**
338 * The standard tags (typically performance information and validation links,
339 * if we are in developer debug mode) that should be output in the footer area
340 * of the page. Designed to be called in theme layout.php files.
341 * @return string HTML fragment.
342 */
343 public function standard_footer_html() {
344 global $CFG;
345
346 // This function is normally called from a layout.php file in {@link header()}
347 // but some of the content won't be known until later, so we return a placeholder
348 // for now. This will be replaced with the real content in {@link footer()}.
349 $output = self::PERFORMANCE_INFO_TOKEN;
ee8df661
SH
350 if ($this->page->legacythemeinuse) {
351 // The legacy theme is in use print the notification
352 $output .= html_writer::tag('div', get_string('legacythemeinuse'), array('class'=>'legacythemeinuse'));
353 }
d9c8f425 354 if (!empty($CFG->debugpageinfo)) {
355 $output .= '<div class="performanceinfo">This page is: ' . $this->page->debug_summary() . '</div>';
356 }
357 if (!empty($CFG->debugvalidators)) {
358 $output .= '<div class="validators"><ul>
359 <li><a href="http://validator.w3.org/check?verbose=1&amp;ss=1&amp;uri=' . urlencode(qualified_me()) . '">Validate HTML</a></li>
360 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=-1&amp;url1=' . urlencode(qualified_me()) . '">Section 508 Check</a></li>
361 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=0&amp;warnp2n3e=1&amp;url1=' . urlencode(qualified_me()) . '">WCAG 1 (2,3) Check</a></li>
362 </ul></div>';
363 }
364 return $output;
365 }
366
367 /**
368 * The standard tags (typically script tags that are not needed earlier) that
369 * should be output after everything else, . Designed to be called in theme layout.php files.
370 * @return string HTML fragment.
371 */
372 public function standard_end_of_body_html() {
373 // This function is normally called from a layout.php file in {@link header()}
374 // but some of the content won't be known until later, so we return a placeholder
375 // for now. This will be replaced with the real content in {@link footer()}.
376 echo self::END_HTML_TOKEN;
377 }
378
379 /**
380 * Return the standard string that says whether you are logged in (and switched
381 * roles/logged in as another user).
382 * @return string HTML fragment.
383 */
384 public function login_info() {
244a32c6 385 global $USER, $CFG, $DB;
4bcc5118 386
244a32c6
PS
387 if (during_initial_install()) {
388 return '';
389 }
4bcc5118 390
244a32c6 391 $course = $this->page->course;
4bcc5118 392
244a32c6
PS
393 if (session_is_loggedinas()) {
394 $realuser = session_get_realuser();
395 $fullname = fullname($realuser, true);
4aea3cc7 396 $realuserinfo = " [<a href=\"$CFG->wwwroot/course/loginas.php?id=$course->id&amp;return=1&amp;sesskey=".sesskey()."\">$fullname</a>] ";
244a32c6
PS
397 } else {
398 $realuserinfo = '';
399 }
4bcc5118 400
244a32c6 401 $loginurl = get_login_url();
4bcc5118 402
244a32c6
PS
403 if (empty($course->id)) {
404 // $course->id is not defined during installation
405 return '';
4f0c2d00 406 } else if (isloggedin()) {
244a32c6 407 $context = get_context_instance(CONTEXT_COURSE, $course->id);
4bcc5118 408
244a32c6 409 $fullname = fullname($USER, true);
03d9401e
MD
410 // Since Moodle 2.0 this link always goes to the public profile page (not the course profile page)
411 $username = "<a href=\"$CFG->wwwroot/user/profile.php?id=$USER->id\">$fullname</a>";
244a32c6 412 if (is_mnet_remote_user($USER) and $idprovider = $DB->get_record('mnet_host', array('id'=>$USER->mnethostid))) {
4aea3cc7 413 $username .= " from <a href=\"{$idprovider->wwwroot}\">{$idprovider->name}</a>";
244a32c6
PS
414 }
415 if (isset($USER->username) && $USER->username == 'guest') {
416 $loggedinas = $realuserinfo.get_string('loggedinasguest').
4aea3cc7 417 " (<a href=\"$loginurl\">".get_string('login').'</a>)';
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PS
418 } else if (!empty($USER->access['rsw'][$context->path])) {
419 $rolename = '';
420 if ($role = $DB->get_record('role', array('id'=>$USER->access['rsw'][$context->path]))) {
421 $rolename = ': '.format_string($role->name);
422 }
423 $loggedinas = get_string('loggedinas', 'moodle', $username).$rolename.
4aea3cc7 424 " (<a href=\"$CFG->wwwroot/course/view.php?id=$course->id&amp;switchrole=0&amp;sesskey=".sesskey()."\">".get_string('switchrolereturn').'</a>)';
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PS
425 } else {
426 $loggedinas = $realuserinfo.get_string('loggedinas', 'moodle', $username).' '.
4aea3cc7 427 " (<a href=\"$CFG->wwwroot/login/logout.php?sesskey=".sesskey()."\">".get_string('logout').'</a>)';
244a32c6
PS
428 }
429 } else {
430 $loggedinas = get_string('loggedinnot', 'moodle').
4aea3cc7 431 " (<a href=\"$loginurl\">".get_string('login').'</a>)';
244a32c6 432 }
4bcc5118 433
244a32c6 434 $loggedinas = '<div class="logininfo">'.$loggedinas.'</div>';
4bcc5118 435
244a32c6
PS
436 if (isset($SESSION->justloggedin)) {
437 unset($SESSION->justloggedin);
438 if (!empty($CFG->displayloginfailures)) {
439 if (!empty($USER->username) and $USER->username != 'guest') {
440 if ($count = count_login_failures($CFG->displayloginfailures, $USER->username, $USER->lastlogin)) {
441 $loggedinas .= '&nbsp;<div class="loginfailures">';
442 if (empty($count->accounts)) {
443 $loggedinas .= get_string('failedloginattempts', '', $count);
444 } else {
445 $loggedinas .= get_string('failedloginattemptsall', '', $count);
446 }
447 if (has_capability('coursereport/log:view', get_context_instance(CONTEXT_SYSTEM))) {
448 $loggedinas .= ' (<a href="'.$CFG->wwwroot.'/course/report/log/index.php'.
449 '?chooselog=1&amp;id=1&amp;modid=site_errors">'.get_string('logs').'</a>)';
450 }
451 $loggedinas .= '</div>';
452 }
453 }
454 }
455 }
4bcc5118 456
244a32c6 457 return $loggedinas;
d9c8f425 458 }
459
460 /**
461 * Return the 'back' link that normally appears in the footer.
462 * @return string HTML fragment.
463 */
464 public function home_link() {
465 global $CFG, $SITE;
466
467 if ($this->page->pagetype == 'site-index') {
468 // Special case for site home page - please do not remove
469 return '<div class="sitelink">' .
34dff6aa 470 '<a title="Moodle" href="http://moodle.org/">' .
53228896 471 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
d9c8f425 472
473 } else if (!empty($CFG->target_release) && $CFG->target_release != $CFG->release) {
474 // Special case for during install/upgrade.
475 return '<div class="sitelink">'.
34dff6aa 476 '<a title="Moodle" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">' .
53228896 477 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
d9c8f425 478
479 } else if ($this->page->course->id == $SITE->id || strpos($this->page->pagetype, 'course-view') === 0) {
480 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/">' .
481 get_string('home') . '</a></div>';
482
483 } else {
484 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/course/view.php?id=' . $this->page->course->id . '">' .
485 format_string($this->page->course->shortname) . '</a></div>';
486 }
487 }
488
489 /**
490 * Redirects the user by any means possible given the current state
491 *
492 * This function should not be called directly, it should always be called using
493 * the redirect function in lib/weblib.php
494 *
495 * The redirect function should really only be called before page output has started
496 * however it will allow itself to be called during the state STATE_IN_BODY
497 *
498 * @param string $encodedurl The URL to send to encoded if required
499 * @param string $message The message to display to the user if any
500 * @param int $delay The delay before redirecting a user, if $message has been
501 * set this is a requirement and defaults to 3, set to 0 no delay
502 * @param boolean $debugdisableredirect this redirect has been disabled for
503 * debugging purposes. Display a message that explains, and don't
504 * trigger the redirect.
505 * @return string The HTML to display to the user before dying, may contain
506 * meta refresh, javascript refresh, and may have set header redirects
507 */
508 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
509 global $CFG;
510 $url = str_replace('&amp;', '&', $encodedurl);
511
512 switch ($this->page->state) {
513 case moodle_page::STATE_BEFORE_HEADER :
514 // No output yet it is safe to delivery the full arsenal of redirect methods
515 if (!$debugdisableredirect) {
516 // Don't use exactly the same time here, it can cause problems when both redirects fire at the same time.
517 $this->metarefreshtag = '<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />'."\n";
593f9b87 518 $this->page->requires->js_function_call('document.location.replace', array($url), false, ($delay + 3));
d9c8f425 519 }
520 $output = $this->header();
521 break;
522 case moodle_page::STATE_PRINTING_HEADER :
523 // We should hopefully never get here
524 throw new coding_exception('You cannot redirect while printing the page header');
525 break;
526 case moodle_page::STATE_IN_BODY :
527 // We really shouldn't be here but we can deal with this
528 debugging("You should really redirect before you start page output");
529 if (!$debugdisableredirect) {
593f9b87 530 $this->page->requires->js_function_call('document.location.replace', array($url), false, $delay);
d9c8f425 531 }
532 $output = $this->opencontainers->pop_all_but_last();
533 break;
534 case moodle_page::STATE_DONE :
535 // Too late to be calling redirect now
536 throw new coding_exception('You cannot redirect after the entire page has been generated');
537 break;
538 }
539 $output .= $this->notification($message, 'redirectmessage');
540 $output .= '<a href="'. $encodedurl .'">'. get_string('continue') .'</a>';
541 if ($debugdisableredirect) {
542 $output .= '<p><strong>Error output, so disabling automatic redirect.</strong></p>';
543 }
544 $output .= $this->footer();
545 return $output;
546 }
547
548 /**
549 * Start output by sending the HTTP headers, and printing the HTML <head>
550 * and the start of the <body>.
551 *
552 * To control what is printed, you should set properties on $PAGE. If you
553 * are familiar with the old {@link print_header()} function from Moodle 1.9
554 * you will find that there are properties on $PAGE that correspond to most
555 * of the old parameters to could be passed to print_header.
556 *
557 * Not that, in due course, the remaining $navigation, $menu parameters here
558 * will be replaced by more properties of $PAGE, but that is still to do.
559 *
d9c8f425 560 * @return string HTML that you must output this, preferably immediately.
561 */
e120c61d 562 public function header() {
d9c8f425 563 global $USER, $CFG;
564
565 $this->page->set_state(moodle_page::STATE_PRINTING_HEADER);
566
78946b9b
PS
567 // Find the appropriate page layout file, based on $this->page->pagelayout.
568 $layoutfile = $this->page->theme->layout_file($this->page->pagelayout);
569 // Render the layout using the layout file.
570 $rendered = $this->render_page_layout($layoutfile);
67e84a7f 571
78946b9b
PS
572 // Slice the rendered output into header and footer.
573 $cutpos = strpos($rendered, self::MAIN_CONTENT_TOKEN);
d9c8f425 574 if ($cutpos === false) {
78946b9b 575 throw new coding_exception('page layout file ' . $layoutfile .
d9c8f425 576 ' does not contain the string "' . self::MAIN_CONTENT_TOKEN . '".');
577 }
78946b9b
PS
578 $header = substr($rendered, 0, $cutpos);
579 $footer = substr($rendered, $cutpos + strlen(self::MAIN_CONTENT_TOKEN));
d9c8f425 580
581 if (empty($this->contenttype)) {
78946b9b 582 debugging('The page layout file did not call $OUTPUT->doctype()');
67e84a7f 583 $header = $this->doctype() . $header;
d9c8f425 584 }
585
586 send_headers($this->contenttype, $this->page->cacheable);
67e84a7f 587
d9c8f425 588 $this->opencontainers->push('header/footer', $footer);
589 $this->page->set_state(moodle_page::STATE_IN_BODY);
67e84a7f 590
d9c8f425 591 return $header . $this->skip_link_target();
592 }
593
594 /**
78946b9b
PS
595 * Renders and outputs the page layout file.
596 * @param string $layoutfile The name of the layout file
d9c8f425 597 * @return string HTML code
598 */
78946b9b 599 protected function render_page_layout($layoutfile) {
92e01ab7 600 global $CFG, $SITE, $USER;
d9c8f425 601 // The next lines are a bit tricky. The point is, here we are in a method
602 // of a renderer class, and this object may, or may not, be the same as
78946b9b 603 // the global $OUTPUT object. When rendering the page layout file, we want to use
d9c8f425 604 // this object. However, people writing Moodle code expect the current
605 // renderer to be called $OUTPUT, not $this, so define a variable called
606 // $OUTPUT pointing at $this. The same comment applies to $PAGE and $COURSE.
607 $OUTPUT = $this;
608 $PAGE = $this->page;
609 $COURSE = $this->page->course;
610
d9c8f425 611 ob_start();
78946b9b
PS
612 include($layoutfile);
613 $rendered = ob_get_contents();
d9c8f425 614 ob_end_clean();
78946b9b 615 return $rendered;
d9c8f425 616 }
617
618 /**
619 * Outputs the page's footer
620 * @return string HTML fragment
621 */
622 public function footer() {
d5a8d9aa 623 global $CFG, $DB;
0f0801f4 624
f6794ace 625 $output = $this->container_end_all(true);
36282d85 626
d9c8f425 627 $footer = $this->opencontainers->pop('header/footer');
628
d5a8d9aa 629 if (debugging() and $DB and $DB->is_transaction_started()) {
03221650 630 // TODO: MDL-20625 print warning - transaction will be rolled back
d5a8d9aa
PS
631 }
632
d9c8f425 633 // Provide some performance info if required
634 $performanceinfo = '';
635 if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
636 $perf = get_performance_info();
637 if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
638 error_log("PERF: " . $perf['txt']);
639 }
640 if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
641 $performanceinfo = $perf['html'];
642 }
643 }
644 $footer = str_replace(self::PERFORMANCE_INFO_TOKEN, $performanceinfo, $footer);
645
646 $footer = str_replace(self::END_HTML_TOKEN, $this->page->requires->get_end_code(), $footer);
647
648 $this->page->set_state(moodle_page::STATE_DONE);
d9c8f425 649
650 return $output . $footer;
651 }
652
f6794ace
PS
653 /**
654 * Close all but the last open container. This is useful in places like error
655 * handling, where you want to close all the open containers (apart from <body>)
656 * before outputting the error message.
657 * @param bool $shouldbenone assert that the stack should be empty now - causes a
658 * developer debug warning if it isn't.
659 * @return string the HTML required to close any open containers inside <body>.
660 */
661 public function container_end_all($shouldbenone = false) {
662 return $this->opencontainers->pop_all_but_last($shouldbenone);
663 }
664
244a32c6
PS
665 /**
666 * Returns lang menu or '', this method also checks forcing of languages in courses.
667 * @return string
668 */
669 public function lang_menu() {
670 global $CFG;
671
672 if (empty($CFG->langmenu)) {
673 return '';
674 }
675
676 if ($this->page->course != SITEID and !empty($this->page->course->lang)) {
677 // do not show lang menu if language forced
678 return '';
679 }
680
681 $currlang = current_language();
1f96e907 682 $langs = get_string_manager()->get_list_of_translations();
4bcc5118 683
244a32c6
PS
684 if (count($langs) < 2) {
685 return '';
686 }
687
a9967cf5
PS
688 $s = new single_select($this->page->url, 'lang', $langs, $currlang, null);
689 $s->label = get_accesshide(get_string('language'));
690 $s->class = 'langmenu';
691 return $this->render($s);
244a32c6
PS
692 }
693
d9c8f425 694 /**
695 * Output the row of editing icons for a block, as defined by the controls array.
696 * @param array $controls an array like {@link block_contents::$controls}.
697 * @return HTML fragment.
698 */
699 public function block_controls($controls) {
700 if (empty($controls)) {
701 return '';
702 }
703 $controlshtml = array();
704 foreach ($controls as $control) {
f4ed6fc4 705 $controlshtml[] = html_writer::tag('a',
26acc814 706 html_writer::empty_tag('img', array('src' => $this->pix_url($control['icon'])->out(false), 'alt' => $control['caption'])),
f4ed6fc4 707 array('class' => 'icon','title' => $control['caption'], 'href' => $control['url']));
d9c8f425 708 }
26acc814 709 return html_writer::tag('div', implode('', $controlshtml), array('class' => 'commands'));
d9c8f425 710 }
711
712 /**
713 * Prints a nice side block with an optional header.
714 *
715 * The content is described
716 * by a {@link block_contents} object.
717 *
718 * @param block_contents $bc HTML for the content
719 * @param string $region the region the block is appearing in.
720 * @return string the HTML to be output.
721 */
dd72b308 722 function block(block_contents $bc, $region) {
d9c8f425 723 $bc = clone($bc); // Avoid messing up the object passed in.
dd72b308
PS
724 if (empty($bc->blockinstanceid) || !strip_tags($bc->title)) {
725 $bc->collapsible = block_contents::NOT_HIDEABLE;
726 }
727 if ($bc->collapsible == block_contents::HIDDEN) {
728 $bc->add_class('hidden');
729 }
730 if (!empty($bc->controls)) {
731 $bc->add_class('block_with_controls');
732 }
d9c8f425 733
734 $skiptitle = strip_tags($bc->title);
735 if (empty($skiptitle)) {
736 $output = '';
737 $skipdest = '';
738 } else {
26acc814
PS
739 $output = html_writer::tag('a', get_string('skipa', 'access', $skiptitle), array('href' => '#sb-' . $bc->skipid, 'class' => 'skip-block'));
740 $skipdest = html_writer::tag('span', '', array('id' => 'sb-' . $bc->skipid, 'class' => 'skip-block-to'));
d9c8f425 741 }
36282d85 742
5d0c95a5 743 $output .= html_writer::start_tag('div', $bc->attributes);
d9c8f425 744
745 $controlshtml = $this->block_controls($bc->controls);
746
747 $title = '';
748 if ($bc->title) {
26acc814 749 $title = html_writer::tag('h2', $bc->title, null);
d9c8f425 750 }
751
752 if ($title || $controlshtml) {
46de77b6 753 $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'));
d9c8f425 754 }
755
5d0c95a5 756 $output .= html_writer::start_tag('div', array('class' => 'content'));
46de77b6
SH
757 if (!$title && !$controlshtml) {
758 $output .= html_writer::tag('div', '', array('class'=>'block_action notitle'));
759 }
d9c8f425 760 $output .= $bc->content;
761
762 if ($bc->footer) {
26acc814 763 $output .= html_writer::tag('div', $bc->footer, array('class' => 'footer'));
d9c8f425 764 }
765
5d0c95a5
PS
766 $output .= html_writer::end_tag('div');
767 $output .= html_writer::end_tag('div');
d9c8f425 768
769 if ($bc->annotation) {
26acc814 770 $output .= html_writer::tag('div', $bc->annotation, array('class' => 'blockannotation'));
d9c8f425 771 }
772 $output .= $skipdest;
773
774 $this->init_block_hider_js($bc);
775 return $output;
776 }
777
778 /**
779 * Calls the JS require function to hide a block.
780 * @param block_contents $bc A block_contents object
781 * @return void
782 */
dd72b308
PS
783 protected function init_block_hider_js(block_contents $bc) {
784 if (!empty($bc->attributes['id']) and $bc->collapsible != block_contents::NOT_HIDEABLE) {
d9c8f425 785 $userpref = 'block' . $bc->blockinstanceid . 'hidden';
786 user_preference_allow_ajax_update($userpref, PARAM_BOOL);
f44b10ed
PS
787 $this->page->requires->yui2_lib('dom');
788 $this->page->requires->yui2_lib('event');
d9c8f425 789 $plaintitle = strip_tags($bc->title);
dd72b308 790 $this->page->requires->js_function_call('new block_hider', array($bc->attributes['id'], $userpref,
d9c8f425 791 get_string('hideblocka', 'access', $plaintitle), get_string('showblocka', 'access', $plaintitle),
b9bc2019 792 $this->pix_url('t/switch_minus')->out(false), $this->pix_url('t/switch_plus')->out(false)));
d9c8f425 793 }
794 }
795
796 /**
797 * Render the contents of a block_list.
798 * @param array $icons the icon for each item.
799 * @param array $items the content of each item.
800 * @return string HTML
801 */
802 public function list_block_contents($icons, $items) {
803 $row = 0;
804 $lis = array();
805 foreach ($items as $key => $string) {
5d0c95a5 806 $item = html_writer::start_tag('li', array('class' => 'r' . $row));
2c5ec833 807 if (!empty($icons[$key])) { //test if the content has an assigned icon
26acc814 808 $item .= html_writer::tag('div', $icons[$key], array('class' => 'icon column c0'));
d9c8f425 809 }
26acc814 810 $item .= html_writer::tag('div', $string, array('class' => 'column c1'));
5d0c95a5 811 $item .= html_writer::end_tag('li');
d9c8f425 812 $lis[] = $item;
813 $row = 1 - $row; // Flip even/odd.
814 }
26acc814 815 return html_writer::tag('ul', implode("\n", $lis), array('class' => 'list'));
d9c8f425 816 }
817
818 /**
819 * Output all the blocks in a particular region.
820 * @param string $region the name of a region on this page.
821 * @return string the HTML to be output.
822 */
823 public function blocks_for_region($region) {
824 $blockcontents = $this->page->blocks->get_content_for_region($region, $this);
825
826 $output = '';
827 foreach ($blockcontents as $bc) {
828 if ($bc instanceof block_contents) {
829 $output .= $this->block($bc, $region);
830 } else if ($bc instanceof block_move_target) {
831 $output .= $this->block_move_target($bc);
832 } else {
833 throw new coding_exception('Unexpected type of thing (' . get_class($bc) . ') found in list of block contents.');
834 }
835 }
836 return $output;
837 }
838
839 /**
840 * Output a place where the block that is currently being moved can be dropped.
841 * @param block_move_target $target with the necessary details.
842 * @return string the HTML to be output.
843 */
844 public function block_move_target($target) {
6ee744b3 845 return html_writer::tag('a', html_writer::tag('span', $target->text, array('class' => 'accesshide')), array('href' => $target->url, 'class' => 'blockmovetarget'));
d9c8f425 846 }
847
574fbea4
PS
848 /**
849 * Renders a sepcial html link with attached action
850 *
851 * @param string|moodle_url $url
852 * @param string $text HTML fragment
853 * @param component_action $action
11820bac 854 * @param array $attributes associative array of html link attributes + disabled
574fbea4
PS
855 * @return HTML fragment
856 */
c63923bd 857 public function action_link($url, $text, component_action $action = null, array $attributes=null) {
574fbea4
PS
858 if (!($url instanceof moodle_url)) {
859 $url = new moodle_url($url);
860 }
861 $link = new action_link($url, $text, $action, $attributes);
862
f14b641b 863 return $this->render($link);
574fbea4
PS
864 }
865
866 /**
867 * Implementation of action_link rendering
868 * @param action_link $link
869 * @return string HTML fragment
870 */
871 protected function render_action_link(action_link $link) {
872 global $CFG;
873
874 // A disabled link is rendered as formatted text
875 if (!empty($link->attributes['disabled'])) {
876 // do not use div here due to nesting restriction in xhtml strict
877 return html_writer::tag('span', $link->text, array('class'=>'currentlink'));
878 }
11820bac 879
574fbea4
PS
880 $attributes = $link->attributes;
881 unset($link->attributes['disabled']);
882 $attributes['href'] = $link->url;
883
884 if ($link->actions) {
f14b641b 885 if (empty($attributes['id'])) {
574fbea4
PS
886 $id = html_writer::random_id('action_link');
887 $attributes['id'] = $id;
888 } else {
889 $id = $attributes['id'];
890 }
891 foreach ($link->actions as $action) {
c80877aa 892 $this->add_action_handler($action, $id);
574fbea4
PS
893 }
894 }
895
26acc814 896 return html_writer::tag('a', $link->text, $attributes);
574fbea4
PS
897 }
898
c63923bd
PS
899
900 /**
901 * Similar to action_link, image is used instead of the text
902 *
903 * @param string|moodle_url $url A string URL or moodel_url
904 * @param pix_icon $pixicon
905 * @param component_action $action
906 * @param array $attributes associative array of html link attributes + disabled
907 * @param bool $linktext show title next to image in link
908 * @return string HTML fragment
909 */
910 public function action_icon($url, pix_icon $pixicon, component_action $action = null, array $attributes = null, $linktext=false) {
911 if (!($url instanceof moodle_url)) {
912 $url = new moodle_url($url);
913 }
914 $attributes = (array)$attributes;
915
524645e7 916 if (empty($attributes['class'])) {
c63923bd
PS
917 // let ppl override the class via $options
918 $attributes['class'] = 'action-icon';
919 }
920
921 $icon = $this->render($pixicon);
922
923 if ($linktext) {
924 $text = $pixicon->attributes['alt'];
925 } else {
926 $text = '';
927 }
928
929 return $this->action_link($url, $text.$icon, $action, $attributes);
930 }
931
d9c8f425 932 /**
0b634d75 933 * Print a message along with button choices for Continue/Cancel
934 *
4ed85790 935 * If a string or moodle_url is given instead of a single_button, method defaults to post.
0b634d75 936 *
d9c8f425 937 * @param string $message The question to ask the user
3ba60ee1
PS
938 * @param single_button|moodle_url|string $continue The single_button component representing the Continue answer. Can also be a moodle_url or string URL
939 * @param single_button|moodle_url|string $cancel The single_button component representing the Cancel answer. Can also be a moodle_url or string URL
d9c8f425 940 * @return string HTML fragment
941 */
942 public function confirm($message, $continue, $cancel) {
4871a238 943 if ($continue instanceof single_button) {
11820bac 944 // ok
4871a238
PS
945 } else if (is_string($continue)) {
946 $continue = new single_button(new moodle_url($continue), get_string('continue'), 'post');
947 } else if ($continue instanceof moodle_url) {
26eab8d4 948 $continue = new single_button($continue, get_string('continue'), 'post');
d9c8f425 949 } else {
4ed85790 950 throw new coding_exception('The continue param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
d9c8f425 951 }
952
4871a238 953 if ($cancel instanceof single_button) {
11820bac 954 // ok
4871a238
PS
955 } else if (is_string($cancel)) {
956 $cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
957 } else if ($cancel instanceof moodle_url) {
26eab8d4 958 $cancel = new single_button($cancel, get_string('cancel'), 'get');
d9c8f425 959 } else {
4ed85790 960 throw new coding_exception('The cancel param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
d9c8f425 961 }
962
d9c8f425 963 $output = $this->box_start('generalbox', 'notice');
26acc814
PS
964 $output .= html_writer::tag('p', $message);
965 $output .= html_writer::tag('div', $this->render($continue) . $this->render($cancel), array('class' => 'buttons'));
d9c8f425 966 $output .= $this->box_end();
967 return $output;
968 }
969
3cd5305f 970 /**
3ba60ee1 971 * Returns a form with a single button.
3cd5305f 972 *
3ba60ee1 973 * @param string|moodle_url $url
3cd5305f
PS
974 * @param string $label button text
975 * @param string $method get or post submit method
3ba60ee1 976 * @param array $options associative array {disabled, title, etc.}
3cd5305f
PS
977 * @return string HTML fragment
978 */
3ba60ee1 979 public function single_button($url, $label, $method='post', array $options=null) {
574fbea4
PS
980 if (!($url instanceof moodle_url)) {
981 $url = new moodle_url($url);
3ba60ee1 982 }
574fbea4
PS
983 $button = new single_button($url, $label, $method);
984
3ba60ee1
PS
985 foreach ((array)$options as $key=>$value) {
986 if (array_key_exists($key, $button)) {
987 $button->$key = $value;
988 }
3cd5305f
PS
989 }
990
3ba60ee1 991 return $this->render($button);
3cd5305f
PS
992 }
993
d9c8f425 994 /**
3ba60ee1
PS
995 * Internal implementation of single_button rendering
996 * @param single_button $button
d9c8f425 997 * @return string HTML fragment
998 */
3ba60ee1
PS
999 protected function render_single_button(single_button $button) {
1000 $attributes = array('type' => 'submit',
1001 'value' => $button->label,
db09524d 1002 'disabled' => $button->disabled ? 'disabled' : null,
3ba60ee1
PS
1003 'title' => $button->tooltip);
1004
1005 if ($button->actions) {
1006 $id = html_writer::random_id('single_button');
1007 $attributes['id'] = $id;
1008 foreach ($button->actions as $action) {
c80877aa 1009 $this->add_action_handler($action, $id);
3ba60ee1 1010 }
d9c8f425 1011 }
d9c8f425 1012
3ba60ee1
PS
1013 // first the input element
1014 $output = html_writer::empty_tag('input', $attributes);
d9c8f425 1015
3ba60ee1
PS
1016 // then hidden fields
1017 $params = $button->url->params();
1018 if ($button->method === 'post') {
1019 $params['sesskey'] = sesskey();
1020 }
1021 foreach ($params as $var => $val) {
1022 $output .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $var, 'value' => $val));
1023 }
d9c8f425 1024
3ba60ee1 1025 // then div wrapper for xhtml strictness
26acc814 1026 $output = html_writer::tag('div', $output);
d9c8f425 1027
3ba60ee1 1028 // now the form itself around it
eb788065 1029 $url = $button->url->out_omit_querystring(); // url without params
a6855934
PS
1030 if ($url === '') {
1031 $url = '#'; // there has to be always some action
1032 }
3ba60ee1 1033 $attributes = array('method' => $button->method,
a6855934 1034 'action' => $url,
3ba60ee1 1035 'id' => $button->formid);
26acc814 1036 $output = html_writer::tag('form', $output, $attributes);
d9c8f425 1037
3ba60ee1 1038 // and finally one more wrapper with class
26acc814 1039 return html_writer::tag('div', $output, array('class' => $button->class));
d9c8f425 1040 }
1041
a9967cf5 1042 /**
ab08be98 1043 * Returns a form with a single select widget.
a9967cf5
PS
1044 * @param moodle_url $url form action target, includes hidden fields
1045 * @param string $name name of selection field - the changing parameter in url
1046 * @param array $options list of options
1047 * @param string $selected selected element
1048 * @param array $nothing
f8dab966 1049 * @param string $formid
a9967cf5
PS
1050 * @return string HTML fragment
1051 */
f8dab966 1052 public function single_select($url, $name, array $options, $selected='', $nothing=array(''=>'choosedots'), $formid=null) {
a9967cf5
PS
1053 if (!($url instanceof moodle_url)) {
1054 $url = new moodle_url($url);
1055 }
f8dab966 1056 $select = new single_select($url, $name, $options, $selected, $nothing, $formid);
a9967cf5
PS
1057
1058 return $this->render($select);
1059 }
1060
1061 /**
1062 * Internal implementation of single_select rendering
1063 * @param single_select $select
1064 * @return string HTML fragment
1065 */
1066 protected function render_single_select(single_select $select) {
1067 $select = clone($select);
1068 if (empty($select->formid)) {
1069 $select->formid = html_writer::random_id('single_select_f');
1070 }
1071
1072 $output = '';
1073 $params = $select->url->params();
1074 if ($select->method === 'post') {
1075 $params['sesskey'] = sesskey();
1076 }
1077 foreach ($params as $name=>$value) {
1078 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$value));
1079 }
1080
1081 if (empty($select->attributes['id'])) {
1082 $select->attributes['id'] = html_writer::random_id('single_select');
1083 }
1084
0b2cb132
PS
1085 if ($select->disabled) {
1086 $select->attributes['disabled'] = 'disabled';
1087 }
4d10e579 1088
a9967cf5
PS
1089 if ($select->tooltip) {
1090 $select->attributes['title'] = $select->tooltip;
1091 }
1092
1093 if ($select->label) {
26acc814 1094 $output .= html_writer::tag('label', $select->label, array('for'=>$select->attributes['id']));
a9967cf5
PS
1095 }
1096
1097 if ($select->helpicon instanceof help_icon) {
1098 $output .= $this->render($select->helpicon);
259c165d
PS
1099 } else if ($select->helpicon instanceof old_help_icon) {
1100 $output .= $this->render($select->helpicon);
a9967cf5
PS
1101 }
1102
1103 $output .= html_writer::select($select->options, $select->name, $select->selected, $select->nothing, $select->attributes);
1104
1105 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
26acc814 1106 $output .= html_writer::tag('noscript', $go, array('style'=>'inline'));
a9967cf5
PS
1107
1108 $nothing = empty($select->nothing) ? false : key($select->nothing);
edc28287 1109 $this->page->requires->js_init_call('M.util.init_select_autosubmit', array($select->formid, $select->attributes['id'], $nothing));
a9967cf5
PS
1110
1111 // then div wrapper for xhtml strictness
26acc814 1112 $output = html_writer::tag('div', $output);
a9967cf5
PS
1113
1114 // now the form itself around it
1115 $formattributes = array('method' => $select->method,
1116 'action' => $select->url->out_omit_querystring(),
1117 'id' => $select->formid);
26acc814 1118 $output = html_writer::tag('form', $output, $formattributes);
4d10e579
PS
1119
1120 // and finally one more wrapper with class
26acc814 1121 return html_writer::tag('div', $output, array('class' => $select->class));
4d10e579
PS
1122 }
1123
1124 /**
ab08be98 1125 * Returns a form with a url select widget.
4d10e579
PS
1126 * @param array $urls list of urls - array('/course/view.php?id=1'=>'Frontpage', ....)
1127 * @param string $selected selected element
1128 * @param array $nothing
1129 * @param string $formid
1130 * @return string HTML fragment
1131 */
1132 public function url_select(array $urls, $selected, $nothing=array(''=>'choosedots'), $formid=null) {
1133 $select = new url_select($urls, $selected, $nothing, $formid);
1134 return $this->render($select);
1135 }
1136
1137 /**
ab08be98 1138 * Internal implementation of url_select rendering
4d10e579
PS
1139 * @param single_select $select
1140 * @return string HTML fragment
1141 */
1142 protected function render_url_select(url_select $select) {
1143 $select = clone($select);
1144 if (empty($select->formid)) {
1145 $select->formid = html_writer::random_id('url_select_f');
1146 }
1147
1148 if (empty($select->attributes['id'])) {
1149 $select->attributes['id'] = html_writer::random_id('url_select');
1150 }
1151
1152 if ($select->disabled) {
1153 $select->attributes['disabled'] = 'disabled';
1154 }
1155
1156 if ($select->tooltip) {
1157 $select->attributes['title'] = $select->tooltip;
1158 }
1159
1160 $output = '';
1161
1162 if ($select->label) {
26acc814 1163 $output .= html_writer::tag('label', $select->label, array('for'=>$select->attributes['id']));
4d10e579
PS
1164 }
1165
1166 if ($select->helpicon instanceof help_icon) {
1167 $output .= $this->render($select->helpicon);
259c165d
PS
1168 } else if ($select->helpicon instanceof old_help_icon) {
1169 $output .= $this->render($select->helpicon);
4d10e579
PS
1170 }
1171
1172 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
1173 $output .= html_writer::select($select->urls, 'jump', $select->selected, $select->nothing, $select->attributes);
1174
1175 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
26acc814 1176 $output .= html_writer::tag('noscript', $go, array('style'=>'inline'));
4d10e579
PS
1177
1178 $nothing = empty($select->nothing) ? false : key($select->nothing);
1179 $output .= $this->page->requires->js_init_call('M.util.init_url_select', array($select->formid, $select->attributes['id'], $nothing));
1180
1181 // then div wrapper for xhtml strictness
26acc814 1182 $output = html_writer::tag('div', $output);
4d10e579
PS
1183
1184 // now the form itself around it
1185 $formattributes = array('method' => 'post',
1186 'action' => new moodle_url('/course/jumpto.php'),
1187 'id' => $select->formid);
26acc814 1188 $output = html_writer::tag('form', $output, $formattributes);
a9967cf5
PS
1189
1190 // and finally one more wrapper with class
26acc814 1191 return html_writer::tag('div', $output, array('class' => $select->class));
a9967cf5
PS
1192 }
1193
d9c8f425 1194 /**
1195 * Returns a string containing a link to the user documentation.
1196 * Also contains an icon by default. Shown to teachers and admin only.
1197 * @param string $path The page link after doc root and language, no leading slash.
1198 * @param string $text The text to be displayed for the link
8ae8bf8a 1199 * @retrun string
d9c8f425 1200 */
8ae8bf8a
PS
1201 public function doc_link($path, $text) {
1202 global $CFG;
1203
000c278c 1204 $icon = $this->pix_icon('docs', $text, 'moodle', array('class'=>'iconhelp'));
8ae8bf8a 1205
000c278c 1206 $url = new moodle_url(get_docs_url($path));
8ae8bf8a 1207
c80877aa 1208 $attributes = array('href'=>$url);
d9c8f425 1209 if (!empty($CFG->doctonewwindow)) {
c80877aa 1210 $attributes['id'] = $this->add_action_handler(new popup_action('click', $url));
d9c8f425 1211 }
1adaa404 1212
26acc814 1213 return html_writer::tag('a', $icon.$text, $attributes);
d9c8f425 1214 }
1215
000c278c
PS
1216 /**
1217 * Render icon
1218 * @param string $pix short pix name
1219 * @param string $alt mandatory alt attribute
1220 * @param strin $component standard compoennt name like 'moodle', 'mod_form', etc.
1221 * @param array $attributes htm lattributes
1222 * @return string HTML fragment
1223 */
1224 public function pix_icon($pix, $alt, $component='moodle', array $attributes = null) {
1225 $icon = new pix_icon($pix, $alt, $component, $attributes);
1226 return $this->render($icon);
1227 }
1228
1229 /**
1230 * Render icon
1231 * @param pix_icon $icon
1232 * @return string HTML fragment
1233 */
ce0110bf 1234 protected function render_pix_icon(pix_icon $icon) {
000c278c
PS
1235 $attributes = $icon->attributes;
1236 $attributes['src'] = $this->pix_url($icon->pix, $icon->component);
c80877aa 1237 return html_writer::empty_tag('img', $attributes);
000c278c
PS
1238 }
1239
a09aeee4
AD
1240 /**
1241 * Produces the html that represents this rating in the UI
1242 * @param $page the page object on which this rating will appear
1243 */
1244 function render_rating(rating $rating) {
7ac928a7 1245 global $CFG, $USER;
a09aeee4
AD
1246 static $havesetupjavascript = false;
1247
63e87951
AD
1248 if( $rating->settings->aggregationmethod == RATING_AGGREGATE_NONE ){
1249 return null;//ratings are turned off
1250 }
1251
b1721f67
AD
1252 $useajax = !empty($CFG->enableajax);
1253
1254 //include required Javascript
1255 if( !$havesetupjavascript && $useajax ) {
3dcdf440 1256 $this->page->requires->js_init_call('M.core_rating.init');
a09aeee4
AD
1257 $havesetupjavascript = true;
1258 }
1259
63e87951
AD
1260 //check the item we're rating was created in the assessable time window
1261 $inassessablewindow = true;
1262 if ( $rating->settings->assesstimestart && $rating->settings->assesstimefinish ) {
1263 if ($rating->itemtimecreated < $rating->settings->assesstimestart || $item->itemtimecreated > $rating->settings->assesstimefinish) {
1264 $inassessablewindow = false;
a09aeee4 1265 }
63e87951 1266 }
a09aeee4 1267
63e87951
AD
1268 $strrate = get_string("rate", "rating");
1269 $ratinghtml = ''; //the string we'll return
1270
d251b259
AD
1271 //permissions check - can they view the aggregate?
1272 if ( ($rating->itemuserid==$USER->id
1273 && $rating->settings->permissions->view && $rating->settings->pluginpermissions->view)
1274 || ($rating->itemuserid!=$USER->id
1275 && $rating->settings->permissions->viewany && $rating->settings->pluginpermissions->viewany) ) {
1276
1277 $aggregatelabel = '';
1278 switch ($rating->settings->aggregationmethod) {
1279 case RATING_AGGREGATE_AVERAGE :
1280 $aggregatelabel .= get_string("aggregateavg", "forum");
1281 break;
1282 case RATING_AGGREGATE_COUNT :
1283 $aggregatelabel .= get_string("aggregatecount", "forum");
1284 break;
1285 case RATING_AGGREGATE_MAXIMUM :
1286 $aggregatelabel .= get_string("aggregatemax", "forum");
1287 break;
1288 case RATING_AGGREGATE_MINIMUM :
1289 $aggregatelabel .= get_string("aggregatemin", "forum");
1290 break;
1291 case RATING_AGGREGATE_SUM :
1292 $aggregatelabel .= get_string("aggregatesum", "forum");
1293 break;
1294 }
a09aeee4 1295
d251b259
AD
1296 //$scalemax = 0;//no longer displaying scale max
1297 $aggregatestr = '';
a09aeee4 1298
d251b259
AD
1299 if ($rating->aggregate) {
1300 if (is_array($rating->settings->scale->scaleitems)) {
1301 //$scalemax = $rating->settings->scale->scaleitems[ count($rating->settings->scale->scaleitems) ];
1302 $aggregatestr .= $rating->settings->scale->scaleitems[round($rating->aggregate)];//round aggregate as we're using it as an index
63e87951 1303 }
d251b259
AD
1304 else { //its numeric
1305 //$scalemax = $rating->settings->scale->scaleitems;
1306 $aggregatestr .= round($rating->aggregate,1);
63e87951 1307 }
d251b259
AD
1308 } else {
1309 $aggregatestr = ' - ';
1310 }
1311
1312 $countstr = null;
1313 if ($rating->count>0) {
1314 $countstr = "<span id='ratingcount{$rating->itemid}'>({$rating->count})</span>";
1315 } else {
1316 $countstr = "<span id='ratingcount{$rating->itemid}'></span>";
1317 }
63e87951 1318
d251b259
AD
1319 //$aggregatehtml = "{$ratingstr} / $scalemax ({$rating->count}) ";
1320 $aggregatehtml = "<span id='ratingaggregate{$rating->itemid}'>{$aggregatestr}</span> $countstr ";
63e87951 1321
d251b259
AD
1322 if ($rating->settings->permissions->viewall && $rating->settings->pluginpermissions->viewall) {
1323 $url = "/rating/index.php?contextid={$rating->context->id}&itemid={$rating->itemid}&scaleid={$rating->settings->scale->id}";
1324 $nonpopuplink = new moodle_url($url);
1325 $popuplink = new moodle_url("$url&popup=1");
a09aeee4 1326
d251b259
AD
1327 $action = new popup_action('click', $popuplink, 'ratings', array('height' => 400, 'width' => 600));
1328 $ratinghtml .= $aggregatelabel.': '.$this->action_link($nonpopuplink, $aggregatehtml, $action);
1329 } else {
1330 $ratinghtml .= "{$aggregatelabel}: $aggregatehtml";
a09aeee4 1331 }
d251b259 1332 }
a09aeee4 1333
d251b259
AD
1334 $formstart = null;
1335 //if the item doesnt belong to the current user, the user has permission to rate
1336 //and we're within the assessable period
1337 if ($rating->itemuserid!=$USER->id
1338 && $rating->settings->permissions->rate
1339 && $rating->settings->pluginpermissions->rate
1340 && $inassessablewindow) {
1341
1342 $formstart = <<<END
63e87951 1343<form id="postrating{$rating->itemid}" class="postratingform" method="post" action="{$CFG->wwwroot}/rating/rate.php">
a09aeee4
AD
1344<div class="ratingform">
1345<input type="hidden" class="ratinginput" name="contextid" value="{$rating->context->id}" />
1346<input type="hidden" class="ratinginput" name="itemid" value="{$rating->itemid}" />
1347<input type="hidden" class="ratinginput" name="scaleid" value="{$rating->settings->scale->id}" />
1348<input type="hidden" class="ratinginput" name="returnurl" value="{$rating->settings->returnurl}" />
63e87951
AD
1349<input type="hidden" class="ratinginput" name="rateduserid" value="{$rating->itemuserid}" />
1350<input type="hidden" class="ratinginput" name="aggregation" value="{$rating->settings->aggregationmethod}" />
a09aeee4 1351END;
d251b259
AD
1352 if (empty($ratinghtml)) {
1353 $ratinghtml .= $strrate.': ';
1354 }
63e87951 1355
d251b259 1356 $ratinghtml = $formstart.$ratinghtml;
63e87951 1357
d251b259
AD
1358 //generate an array of values for numeric scales
1359 $scalearray = $rating->settings->scale->scaleitems;
1360 if (!is_array($scalearray)) { //almost certainly a numerical scale
1361 $intscalearray = intval($scalearray);//just in case theyve passed "5" instead of 5
1362 if( is_int($intscalearray) && $intscalearray>0 ){
1363 $scalearray = array();
1364 for($i=0; $i<=$rating->settings->scale->scaleitems; $i++) {
1365 $scalearray[$i] = $i;
6c5fcef7 1366 }
a09aeee4 1367 }
d251b259 1368 }
6c5fcef7 1369
d251b259
AD
1370 $scalearray = array(RATING_UNSET_RATING => $strrate.'...') + $scalearray;
1371 $ratinghtml .= html_writer::select($scalearray, 'rating', $rating->rating, false, array('class'=>'postratingmenu ratinginput','id'=>'menurating'.$rating->itemid));
a09aeee4 1372
d251b259
AD
1373 //output submit button
1374 $ratinghtml .= '<span class="ratingsubmit"><input type="submit" class="postratingmenusubmit" id="postratingsubmit'.$rating->itemid.'" value="'.s(get_string('rate', 'rating')).'" />';
a09aeee4 1375
d251b259
AD
1376 if (is_array($rating->settings->scale->scaleitems)) {
1377 $ratinghtml .= $this->help_icon_scale($rating->settings->scale->courseid, $rating->settings->scale);
a09aeee4 1378 }
d251b259 1379 $ratinghtml .= '</span></div></form>';
a09aeee4
AD
1380 }
1381
63e87951 1382 return $ratinghtml;
a09aeee4
AD
1383 }
1384
d9c8f425 1385 /*
1386 * Centered heading with attached help button (same title text)
1387 * and optional icon attached
4bcc5118 1388 * @param string $text A heading text
53a78cef 1389 * @param string $helpidentifier The keyword that defines a help page
4bcc5118
PS
1390 * @param string $component component name
1391 * @param string|moodle_url $icon
1392 * @param string $iconalt icon alt text
d9c8f425 1393 * @return string HTML fragment
1394 */
53a78cef 1395 public function heading_with_help($text, $helpidentifier, $component='moodle', $icon='', $iconalt='') {
4bcc5118
PS
1396 $image = '';
1397 if ($icon) {
0029a917 1398 $image = $this->pix_icon($icon, $iconalt, $component, array('class'=>'icon'));
d9c8f425 1399 }
4bcc5118 1400
259c165d
PS
1401 $help = '';
1402 if ($helpidentifier) {
1403 $help = $this->help_icon($helpidentifier, $component);
1404 }
4bcc5118
PS
1405
1406 return $this->heading($image.$text.$help, 2, 'main help');
d9c8f425 1407 }
1408
1409 /**
1410 * Print a help icon.
1411 *
4bcc5118 1412 * @param string $page The keyword that defines a help page
bf11293a 1413 * @param string $title A descriptive text for accessibility only
4bcc5118 1414 * @param string $component component name
bf11293a
PS
1415 * @param string|bool $linktext true means use $title as link text, string means link text value
1416 * @return string HTML fragment
1417 */
596509e4
PS
1418 public function old_help_icon($helpidentifier, $title, $component = 'moodle', $linktext = '') {
1419 $icon = new old_help_icon($helpidentifier, $title, $component);
bf11293a
PS
1420 if ($linktext === true) {
1421 $icon->linktext = $title;
1422 } else if (!empty($linktext)) {
1423 $icon->linktext = $linktext;
1424 }
1425 return $this->render($icon);
1426 }
4bcc5118 1427
bf11293a
PS
1428 /**
1429 * Implementation of user image rendering.
1430 * @param help_icon $helpicon
1431 * @return string HTML fragment
d9c8f425 1432 */
596509e4 1433 protected function render_old_help_icon(old_help_icon $helpicon) {
bf11293a 1434 global $CFG;
d9c8f425 1435
bf11293a
PS
1436 // first get the help image icon
1437 $src = $this->pix_url('help');
d9c8f425 1438
bf11293a
PS
1439 if (empty($helpicon->linktext)) {
1440 $alt = $helpicon->title;
1441 } else {
1442 $alt = get_string('helpwiththis');
1443 }
1444
1445 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1446 $output = html_writer::empty_tag('img', $attributes);
1447
1448 // add the link text if given
1449 if (!empty($helpicon->linktext)) {
1450 // the spacing has to be done through CSS
1451 $output .= $helpicon->linktext;
d9c8f425 1452 }
1453
53a78cef
PS
1454 // now create the link around it
1455 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->helpidentifier, 'lang'=>current_language()));
bf11293a
PS
1456
1457 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1458 $title = get_string('helpprefix2', '', trim($helpicon->title, ". \t"));
1459
1460 $attributes = array('href'=>$url, 'title'=>$title);
1461 $id = html_writer::random_id('helpicon');
1462 $attributes['id'] = $id;
26acc814 1463 $output = html_writer::tag('a', $output, $attributes);
8af8be4a
DM
1464
1465 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1466
bf11293a 1467 // and finally span
26acc814 1468 return html_writer::tag('span', $output, array('class' => 'helplink'));
d9c8f425 1469 }
1470
259c165d
PS
1471 /**
1472 * Print a help icon.
1473 *
1474 * @param string $identifier The keyword that defines a help page
1475 * @param string $component component name
1476 * @param string|bool $linktext true means use $title as link text, string means link text value
1477 * @return string HTML fragment
1478 */
1479 public function help_icon($identifier, $component = 'moodle', $linktext = '') {
2cf81209 1480 $icon = new help_icon($identifier, $component);
259c165d
PS
1481 $icon->diag_strings();
1482 if ($linktext === true) {
1483 $icon->linktext = get_string($icon->identifier, $icon->component);
1484 } else if (!empty($linktext)) {
1485 $icon->linktext = $linktext;
1486 }
1487 return $this->render($icon);
1488 }
1489
1490 /**
1491 * Implementation of user image rendering.
1492 * @param help_icon $helpicon
1493 * @return string HTML fragment
1494 */
1495 protected function render_help_icon(help_icon $helpicon) {
1496 global $CFG;
1497
1498 // first get the help image icon
1499 $src = $this->pix_url('help');
1500
1501 $title = get_string($helpicon->identifier, $helpicon->component);
1502
1503 if (empty($helpicon->linktext)) {
1504 $alt = $title;
1505 } else {
1506 $alt = get_string('helpwiththis');
1507 }
1508
1509 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1510 $output = html_writer::empty_tag('img', $attributes);
1511
1512 // add the link text if given
1513 if (!empty($helpicon->linktext)) {
1514 // the spacing has to be done through CSS
1515 $output .= $helpicon->linktext;
1516 }
1517
1518 // now create the link around it
1519 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->identifier, 'lang'=>current_language()));
1520
1521 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1522 $title = get_string('helpprefix2', '', trim($title, ". \t"));
1523
1524 $attributes = array('href'=>$url, 'title'=>$title);
1525 $id = html_writer::random_id('helpicon');
1526 $attributes['id'] = $id;
259c165d
PS
1527 $output = html_writer::tag('a', $output, $attributes);
1528
2cf81209
SH
1529 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1530
259c165d
PS
1531 // and finally span
1532 return html_writer::tag('span', $output, array('class' => 'helplink'));
1533 }
1534
d9c8f425 1535 /**
4bcc5118 1536 * Print scale help icon.
d9c8f425 1537 *
4bcc5118
PS
1538 * @param int $courseid
1539 * @param object $scale instance
1540 * @return string HTML fragment
d9c8f425 1541 */
4bcc5118
PS
1542 public function help_icon_scale($courseid, stdClass $scale) {
1543 global $CFG;
02f64f97 1544
4bcc5118 1545 $title = get_string('helpprefix2', '', $scale->name) .' ('.get_string('newwindow').')';
02f64f97 1546
0029a917 1547 $icon = $this->pix_icon('help', get_string('scales'), 'moodle', array('class'=>'iconhelp'));
02f64f97 1548
57cd3739 1549 $link = new moodle_url('/course/scales.php', array('id' => $courseid, 'list' => true, 'scaleid' => $scale->id));
230ec401 1550 $action = new popup_action('click', $link, 'ratingscale');
02f64f97 1551
26acc814 1552 return html_writer::tag('span', $this->action_link($link, $icon, $action), array('class' => 'helplink'));
d9c8f425 1553 }
1554
1555 /**
1556 * Creates and returns a spacer image with optional line break.
1557 *
0029a917
PS
1558 * @param array $attributes
1559 * @param boo spacer
d9c8f425 1560 * @return string HTML fragment
1561 */
0029a917
PS
1562 public function spacer(array $attributes = null, $br = false) {
1563 $attributes = (array)$attributes;
1564 if (empty($attributes['width'])) {
1565 $attributes['width'] = 1;
1ba862ec
PS
1566 }
1567 if (empty($options['height'])) {
0029a917 1568 $attributes['height'] = 1;
d9c8f425 1569 }
0029a917 1570 $attributes['class'] = 'spacer';
d9c8f425 1571
0029a917 1572 $output = $this->pix_icon('spacer', '', 'moodle', $attributes);
b65bfc3e 1573
0029a917 1574 if (!empty($br)) {
1ba862ec
PS
1575 $output .= '<br />';
1576 }
d9c8f425 1577
1578 return $output;
1579 }
1580
d9c8f425 1581 /**
1582 * Print the specified user's avatar.
1583 *
5d0c95a5 1584 * User avatar may be obtained in two ways:
d9c8f425 1585 * <pre>
812dbaf7
PS
1586 * // Option 1: (shortcut for simple cases, preferred way)
1587 * // $user has come from the DB and has fields id, picture, imagealt, firstname and lastname
1588 * $OUTPUT->user_picture($user, array('popup'=>true));
1589 *
5d0c95a5
PS
1590 * // Option 2:
1591 * $userpic = new user_picture($user);
d9c8f425 1592 * // Set properties of $userpic
812dbaf7 1593 * $userpic->popup = true;
5d0c95a5 1594 * $OUTPUT->render($userpic);
d9c8f425 1595 * </pre>
1596 *
5d0c95a5 1597 * @param object Object with at least fields id, picture, imagealt, firstname, lastname
812dbaf7 1598 * If any of these are missing, the database is queried. Avoid this
d9c8f425 1599 * if at all possible, particularly for reports. It is very bad for performance.
812dbaf7
PS
1600 * @param array $options associative array with user picture options, used only if not a user_picture object,
1601 * options are:
1602 * - courseid=$this->page->course->id (course id of user profile in link)
1603 * - size=35 (size of image)
1604 * - link=true (make image clickable - the link leads to user profile)
1605 * - popup=false (open in popup)
1606 * - alttext=true (add image alt attribute)
5d0c95a5 1607 * - class = image class attribute (default 'userpicture')
d9c8f425 1608 * @return string HTML fragment
1609 */
5d0c95a5
PS
1610 public function user_picture(stdClass $user, array $options = null) {
1611 $userpicture = new user_picture($user);
1612 foreach ((array)$options as $key=>$value) {
1613 if (array_key_exists($key, $userpicture)) {
1614 $userpicture->$key = $value;
1615 }
1616 }
1617 return $this->render($userpicture);
1618 }
1619
1620 /**
1621 * Internal implementation of user image rendering.
1622 * @param user_picture $userpicture
1623 * @return string
1624 */
1625 protected function render_user_picture(user_picture $userpicture) {
1626 global $CFG, $DB;
812dbaf7 1627
5d0c95a5
PS
1628 $user = $userpicture->user;
1629
1630 if ($userpicture->alttext) {
1631 if (!empty($user->imagealt)) {
1632 $alt = $user->imagealt;
1633 } else {
1634 $alt = get_string('pictureof', '', fullname($user));
1635 }
d9c8f425 1636 } else {
97c10099 1637 $alt = '';
5d0c95a5
PS
1638 }
1639
1640 if (empty($userpicture->size)) {
1641 $file = 'f2';
1642 $size = 35;
1643 } else if ($userpicture->size === true or $userpicture->size == 1) {
1644 $file = 'f1';
1645 $size = 100;
1646 } else if ($userpicture->size >= 50) {
1647 $file = 'f1';
1648 $size = $userpicture->size;
1649 } else {
1650 $file = 'f2';
1651 $size = $userpicture->size;
d9c8f425 1652 }
1653
5d0c95a5 1654 $class = $userpicture->class;
d9c8f425 1655
5d0c95a5
PS
1656 if (!empty($user->picture)) {
1657 require_once($CFG->libdir.'/filelib.php');
1658 $src = new moodle_url(get_file_url($user->id.'/'.$file.'.jpg', null, 'user'));
1659 } else { // Print default user pictures (use theme version if available)
1660 $class .= ' defaultuserpic';
1661 $src = $this->pix_url('u/' . $file);
1662 }
d9c8f425 1663
5d0c95a5
PS
1664 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>$class, 'width'=>$size, 'height'=>$size);
1665
1666 // get the image html output fisrt
1667 $output = html_writer::empty_tag('img', $attributes);;
1668
1669 // then wrap it in link if needed
1670 if (!$userpicture->link) {
1671 return $output;
d9c8f425 1672 }
1673
5d0c95a5
PS
1674 if (empty($userpicture->courseid)) {
1675 $courseid = $this->page->course->id;
1676 } else {
1677 $courseid = $userpicture->courseid;
1678 }
1679
03d9401e
MD
1680 if ($courseid == SITEID) {
1681 $url = new moodle_url('/user/profile.php', array('id' => $user->id));
1682 } else {
1683 $url = new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $courseid));
1684 }
5d0c95a5
PS
1685
1686 $attributes = array('href'=>$url);
1687
1688 if ($userpicture->popup) {
1689 $id = html_writer::random_id('userpicture');
1690 $attributes['id'] = $id;
c80877aa 1691 $this->add_action_handler(new popup_action('click', $url), $id);
5d0c95a5
PS
1692 }
1693
26acc814 1694 return html_writer::tag('a', $output, $attributes);
d9c8f425 1695 }
1696
1697 /**
1698 * Prints the 'Update this Modulename' button that appears on module pages.
1699 *
1700 * @param string $cmid the course_module id.
1701 * @param string $modulename the module name, eg. "forum", "quiz" or "workshop"
1702 * @return string the HTML for the button, if this user has permission to edit it, else an empty string.
1703 */
1704 public function update_module_button($cmid, $modulename) {
1705 global $CFG;
1706 if (has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_MODULE, $cmid))) {
1707 $modulename = get_string('modulename', $modulename);
1708 $string = get_string('updatethis', '', $modulename);
3ba60ee1
PS
1709 $url = new moodle_url("$CFG->wwwroot/course/mod.php", array('update' => $cmid, 'return' => true, 'sesskey' => sesskey()));
1710 return $this->single_button($url, $string);
d9c8f425 1711 } else {
1712 return '';
1713 }
1714 }
1715
1716 /**
1717 * Prints a "Turn editing on/off" button in a form.
1718 * @param moodle_url $url The URL + params to send through when clicking the button
1719 * @return string HTML the button
1720 */
1721 public function edit_button(moodle_url $url) {
1722 global $USER;
1723 if (!empty($USER->editing)) {
1724 $string = get_string('turneditingoff');
1725 $edit = '0';
1726 } else {
1727 $string = get_string('turneditingon');
1728 $edit = '1';
1729 }
1730
3ba60ee1 1731 $url = new moodle_url($url, array('edit'=>$edit));
d9c8f425 1732
3ba60ee1 1733 return $this->single_button($url, $string);
d9c8f425 1734 }
1735
d9c8f425 1736 /**
1737 * Prints a simple button to close a window
1738 *
d9c8f425 1739 * @param string $text The lang string for the button's label (already output from get_string())
3ba60ee1 1740 * @return string html fragment
d9c8f425 1741 */
7a5c78e0 1742 public function close_window_button($text='') {
d9c8f425 1743 if (empty($text)) {
1744 $text = get_string('closewindow');
1745 }
a6855934
PS
1746 $button = new single_button(new moodle_url('#'), $text, 'get');
1747 $button->add_action(new component_action('click', 'close_window'));
3ba60ee1
PS
1748
1749 return $this->container($this->render($button), 'closewindow');
d9c8f425 1750 }
1751
d9c8f425 1752 /**
1753 * Output an error message. By default wraps the error message in <span class="error">.
1754 * If the error message is blank, nothing is output.
1755 * @param string $message the error message.
1756 * @return string the HTML to output.
1757 */
1758 public function error_text($message) {
1759 if (empty($message)) {
1760 return '';
1761 }
26acc814 1762 return html_writer::tag('span', $message, array('class' => 'error'));
d9c8f425 1763 }
1764
1765 /**
1766 * Do not call this function directly.
1767 *
1768 * To terminate the current script with a fatal error, call the {@link print_error}
1769 * function, or throw an exception. Doing either of those things will then call this
1770 * function to display the error, before terminating the execution.
1771 *
1772 * @param string $message The message to output
1773 * @param string $moreinfourl URL where more info can be found about the error
1774 * @param string $link Link for the Continue button
1775 * @param array $backtrace The execution backtrace
1776 * @param string $debuginfo Debugging information
d9c8f425 1777 * @return string the HTML to output.
1778 */
83267ec0 1779 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
d9c8f425 1780
1781 $output = '';
6f8f4d83 1782 $obbuffer = '';
e57c283d 1783
d9c8f425 1784 if ($this->has_started()) {
50764d37
PS
1785 // we can not always recover properly here, we have problems with output buffering,
1786 // html tables, etc.
d9c8f425 1787 $output .= $this->opencontainers->pop_all_but_last();
50764d37 1788
d9c8f425 1789 } else {
50764d37
PS
1790 // It is really bad if library code throws exception when output buffering is on,
1791 // because the buffered text would be printed before our start of page.
1792 // NOTE: this hack might be behave unexpectedly in case output buffering is enabled in PHP.ini
1793 while (ob_get_level() > 0) {
6f8f4d83 1794 $obbuffer .= ob_get_clean();
50764d37 1795 }
6f8f4d83 1796
d9c8f425 1797 // Header not yet printed
85309744 1798 if (isset($_SERVER['SERVER_PROTOCOL'])) {
78946b9b
PS
1799 // server protocol should be always present, because this render
1800 // can not be used from command line or when outputting custom XML
85309744
PS
1801 @header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
1802 }
7fde1e4b 1803 $this->page->set_url('/'); // no url
191b267b 1804 //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
d9c8f425 1805 $this->page->set_title(get_string('error'));
1806 $output .= $this->header();
1807 }
1808
1809 $message = '<p class="errormessage">' . $message . '</p>'.
1810 '<p class="errorcode"><a href="' . $moreinfourl . '">' .
1811 get_string('moreinformation') . '</a></p>';
1812 $output .= $this->box($message, 'errorbox');
1813
6f8f4d83
PS
1814 if (debugging('', DEBUG_DEVELOPER)) {
1815 if (!empty($debuginfo)) {
c5d18164
PS
1816 $debuginfo = s($debuginfo); // removes all nasty JS
1817 $debuginfo = str_replace("\n", '<br />', $debuginfo); // keep newlines
1818 $output .= $this->notification('<strong>Debug info:</strong> '.$debuginfo, 'notifytiny');
6f8f4d83
PS
1819 }
1820 if (!empty($backtrace)) {
1821 $output .= $this->notification('<strong>Stack trace:</strong> '.format_backtrace($backtrace), 'notifytiny');
1822 }
1823 if ($obbuffer !== '' ) {
1824 $output .= $this->notification('<strong>Output buffer:</strong> '.s($obbuffer), 'notifytiny');
1825 }
d9c8f425 1826 }
1827
1828 if (!empty($link)) {
1829 $output .= $this->continue_button($link);
1830 }
1831
1832 $output .= $this->footer();
1833
1834 // Padding to encourage IE to display our error page, rather than its own.
1835 $output .= str_repeat(' ', 512);
1836
1837 return $output;
1838 }
1839
1840 /**
1841 * Output a notification (that is, a status message about something that has
1842 * just happened).
1843 *
1844 * @param string $message the message to print out
1845 * @param string $classes normally 'notifyproblem' or 'notifysuccess'.
1846 * @return string the HTML to output.
1847 */
1848 public function notification($message, $classes = 'notifyproblem') {
26acc814 1849 return html_writer::tag('div', clean_text($message), array('class' => renderer_base::prepare_classes($classes)));
d9c8f425 1850 }
1851
1852 /**
1853 * Print a continue button that goes to a particular URL.
1854 *
3ba60ee1 1855 * @param string|moodle_url $url The url the button goes to.
d9c8f425 1856 * @return string the HTML to output.
1857 */
3ba60ee1
PS
1858 public function continue_button($url) {
1859 if (!($url instanceof moodle_url)) {
1860 $url = new moodle_url($url);
d9c8f425 1861 }
3ba60ee1
PS
1862 $button = new single_button($url, get_string('continue'), 'get');
1863 $button->class = 'continuebutton';
d9c8f425 1864
3ba60ee1 1865 return $this->render($button);
d9c8f425 1866 }
1867
1868 /**
1869 * Prints a single paging bar to provide access to other pages (usually in a search)
1870 *
929d7a83
PS
1871 * @param int $totalcount Thetotal number of entries available to be paged through
1872 * @param int $page The page you are currently viewing
1873 * @param int $perpage The number of entries that should be shown per page
1874 * @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
1875 * @param string $pagevar name of page parameter that holds the page number
d9c8f425 1876 * @return string the HTML to output.
1877 */
929d7a83
PS
1878 public function paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
1879 $pb = new paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar);
1880 return $this->render($pb);
1881 }
1882
1883 /**
1884 * Internal implementation of paging bar rendering.
1885 * @param paging_bar $pagingbar
1886 * @return string
1887 */
1888 protected function render_paging_bar(paging_bar $pagingbar) {
d9c8f425 1889 $output = '';
1890 $pagingbar = clone($pagingbar);
34059565 1891 $pagingbar->prepare($this, $this->page, $this->target);
d9c8f425 1892
1893 if ($pagingbar->totalcount > $pagingbar->perpage) {
1894 $output .= get_string('page') . ':';
1895
1896 if (!empty($pagingbar->previouslink)) {
56ddb719 1897 $output .= '&#160;(' . $pagingbar->previouslink . ')&#160;';
d9c8f425 1898 }
1899
1900 if (!empty($pagingbar->firstlink)) {
56ddb719 1901 $output .= '&#160;' . $pagingbar->firstlink . '&#160;...';
d9c8f425 1902 }
1903
1904 foreach ($pagingbar->pagelinks as $link) {
56ddb719 1905 $output .= "&#160;&#160;$link";
d9c8f425 1906 }
1907
1908 if (!empty($pagingbar->lastlink)) {
56ddb719 1909 $output .= '&#160;...' . $pagingbar->lastlink . '&#160;';
d9c8f425 1910 }
1911
1912 if (!empty($pagingbar->nextlink)) {
56ddb719 1913 $output .= '&#160;&#160;(' . $pagingbar->nextlink . ')';
d9c8f425 1914 }
1915 }
1916
26acc814 1917 return html_writer::tag('div', $output, array('class' => 'paging'));
d9c8f425 1918 }
1919
d9c8f425 1920 /**
1921 * Output the place a skip link goes to.
1922 * @param string $id The target name from the corresponding $PAGE->requires->skip_link_to($target) call.
1923 * @return string the HTML to output.
1924 */
fe213365 1925 public function skip_link_target($id = null) {
26acc814 1926 return html_writer::tag('span', '', array('id' => $id));
d9c8f425 1927 }
1928
1929 /**
1930 * Outputs a heading
1931 * @param string $text The text of the heading
1932 * @param int $level The level of importance of the heading. Defaulting to 2
1933 * @param string $classes A space-separated list of CSS classes
1934 * @param string $id An optional ID
1935 * @return string the HTML to output.
1936 */
fe213365 1937 public function heading($text, $level = 2, $classes = 'main', $id = null) {
d9c8f425 1938 $level = (integer) $level;
1939 if ($level < 1 or $level > 6) {
1940 throw new coding_exception('Heading level must be an integer between 1 and 6.');
1941 }
26acc814 1942 return html_writer::tag('h' . $level, $text, array('id' => $id, 'class' => renderer_base::prepare_classes($classes)));
d9c8f425 1943 }
1944
1945 /**
1946 * Outputs a box.
1947 * @param string $contents The contents of the box
1948 * @param string $classes A space-separated list of CSS classes
1949 * @param string $id An optional ID
1950 * @return string the HTML to output.
1951 */
fe213365 1952 public function box($contents, $classes = 'generalbox', $id = null) {
d9c8f425 1953 return $this->box_start($classes, $id) . $contents . $this->box_end();
1954 }
1955
1956 /**
1957 * Outputs the opening section of a box.
1958 * @param string $classes A space-separated list of CSS classes
1959 * @param string $id An optional ID
1960 * @return string the HTML to output.
1961 */
fe213365 1962 public function box_start($classes = 'generalbox', $id = null) {
5d0c95a5
PS
1963 $this->opencontainers->push('box', html_writer::end_tag('div'));
1964 return html_writer::start_tag('div', array('id' => $id,
78946b9b 1965 'class' => 'box ' . renderer_base::prepare_classes($classes)));
d9c8f425 1966 }
1967
1968 /**
1969 * Outputs the closing section of a box.
1970 * @return string the HTML to output.
1971 */
1972 public function box_end() {
1973 return $this->opencontainers->pop('box');
1974 }
1975
1976 /**
1977 * Outputs a container.
1978 * @param string $contents The contents of the box
1979 * @param string $classes A space-separated list of CSS classes
1980 * @param string $id An optional ID
1981 * @return string the HTML to output.
1982 */
fe213365 1983 public function container($contents, $classes = null, $id = null) {
d9c8f425 1984 return $this->container_start($classes, $id) . $contents . $this->container_end();
1985 }
1986
1987 /**
1988 * Outputs the opening section of a container.
1989 * @param string $classes A space-separated list of CSS classes
1990 * @param string $id An optional ID
1991 * @return string the HTML to output.
1992 */
fe213365 1993 public function container_start($classes = null, $id = null) {
5d0c95a5
PS
1994 $this->opencontainers->push('container', html_writer::end_tag('div'));
1995 return html_writer::start_tag('div', array('id' => $id,
78946b9b 1996 'class' => renderer_base::prepare_classes($classes)));
d9c8f425 1997 }
1998
1999 /**
2000 * Outputs the closing section of a container.
2001 * @return string the HTML to output.
2002 */
2003 public function container_end() {
2004 return $this->opencontainers->pop('container');
2005 }
7d2a0492 2006
3406acde 2007 /**
7d2a0492 2008 * Make nested HTML lists out of the items
2009 *
2010 * The resulting list will look something like this:
2011 *
2012 * <pre>
2013 * <<ul>>
2014 * <<li>><div class='tree_item parent'>(item contents)</div>
2015 * <<ul>
2016 * <<li>><div class='tree_item'>(item contents)</div><</li>>
2017 * <</ul>>
2018 * <</li>>
2019 * <</ul>>
2020 * </pre>
2021 *
2022 * @param array[]tree_item $items
2023 * @param array[string]string $attrs html attributes passed to the top of
2024 * the list
2025 * @return string HTML
2026 */
2027 function tree_block_contents($items, $attrs=array()) {
2028 // exit if empty, we don't want an empty ul element
2029 if (empty($items)) {
2030 return '';
2031 }
2032 // array of nested li elements
2033 $lis = array();
2034 foreach ($items as $item) {
2035 // this applies to the li item which contains all child lists too
2036 $content = $item->content($this);
2037 $liclasses = array($item->get_css_type());
3406acde 2038 if (!$item->forceopen || (!$item->forceopen && $item->collapse) || ($item->children->count()==0 && $item->nodetype==navigation_node::NODETYPE_BRANCH)) {
7d2a0492 2039 $liclasses[] = 'collapsed';
2040 }
2041 if ($item->isactive === true) {
2042 $liclasses[] = 'current_branch';
2043 }
2044 $liattr = array('class'=>join(' ',$liclasses));
2045 // class attribute on the div item which only contains the item content
2046 $divclasses = array('tree_item');
3406acde 2047 if ($item->children->count()>0 || $item->nodetype==navigation_node::NODETYPE_BRANCH) {
7d2a0492 2048 $divclasses[] = 'branch';
2049 } else {
2050 $divclasses[] = 'leaf';
2051 }
2052 if (!empty($item->classes) && count($item->classes)>0) {
2053 $divclasses[] = join(' ', $item->classes);
2054 }
2055 $divattr = array('class'=>join(' ', $divclasses));
2056 if (!empty($item->id)) {
2057 $divattr['id'] = $item->id;
2058 }
26acc814 2059 $content = html_writer::tag('p', $content, $divattr) . $this->tree_block_contents($item->children);
7d2a0492 2060 if (!empty($item->preceedwithhr) && $item->preceedwithhr===true) {
26acc814 2061 $content = html_writer::empty_tag('hr') . $content;
7d2a0492 2062 }
26acc814 2063 $content = html_writer::tag('li', $content, $liattr);
7d2a0492 2064 $lis[] = $content;
2065 }
26acc814 2066 return html_writer::tag('ul', implode("\n", $lis), $attrs);
7d2a0492 2067 }
2068
2069 /**
2070 * Return the navbar content so that it can be echoed out by the layout
2071 * @return string XHTML navbar
2072 */
2073 public function navbar() {
3406acde
SH
2074 //return $this->page->navbar->content();
2075
2076 $items = $this->page->navbar->get_items();
2077
2078 $count = 0;
2079
2080 $htmlblocks = array();
2081 // Iterate the navarray and display each node
ffca6f4b
SH
2082 $itemcount = count($items);
2083 $separator = get_separator();
2084 for ($i=0;$i < $itemcount;$i++) {
2085 $item = $items[$i];
493a48f3 2086 $item->hideicon = true;
ffca6f4b
SH
2087 if ($i===0) {
2088 $content = html_writer::tag('li', $this->render($item));
2089 } else {
2090 $content = html_writer::tag('li', $separator.$this->render($item));
2091 }
2092 $htmlblocks[] = $content;
3406acde
SH
2093 }
2094
2095 // XHTML
ffca6f4b 2096 return html_writer::tag('ul', join('', $htmlblocks));
3406acde
SH
2097 }
2098
2099 protected function render_navigation_node(navigation_node $item) {
2100 $content = $item->get_content();
2101 $title = $item->get_title();
493a48f3 2102 if ($item->icon instanceof renderable && !$item->hideicon) {
3406acde
SH
2103 $icon = $this->render($item->icon);
2104 $content = $icon.'&nbsp;'.$content; // use CSS for spacing of icons
2105 }
2106 if ($item->helpbutton !== null) {
2107 $content = trim($item->helpbutton).html_writer::tag('span', $content, array('class'=>'clearhelpbutton'));
2108 }
2109 if ($content === '') {
2110 continue;
2111 }
2112 if ($item->action instanceof action_link) {
2113 //TODO: to be replaced with something else
2114 $link = $item->action;
2115 if ($item->hidden) {
2116 $link->add_class('dimmed');
2117 }
2118 $content = $this->output->render($link);
2119 } else if ($item->action instanceof moodle_url) {
2120 $attributes = array();
2121 if ($title !== '') {
2122 $attributes['title'] = $title;
2123 }
2124 if ($item->hidden) {
2125 $attributes['class'] = 'dimmed_text';
2126 }
2127 $content = html_writer::link($item->action, $content, $attributes);
2128
2129 } else if (is_string($item->action) || empty($item->action)) {
2130 $attributes = array();
2131 if ($title !== '') {
2132 $attributes['title'] = $title;
2133 }
2134 if ($item->hidden) {
2135 $attributes['class'] = 'dimmed_text';
2136 }
2137 $content = html_writer::tag('span', $content, $attributes);
2138 }
2139 return $content;
7d2a0492 2140 }
92e01ab7
PS
2141
2142 /**
2143 * Accessibility: Right arrow-like character is
2144 * used in the breadcrumb trail, course navigation menu
2145 * (previous/next activity), calendar, and search forum block.
2146 * If the theme does not set characters, appropriate defaults
2147 * are set automatically. Please DO NOT
2148 * use &lt; &gt; &raquo; - these are confusing for blind users.
2149 * @return string
2150 */
2151 public function rarrow() {
2152 return $this->page->theme->rarrow;
2153 }
2154
2155 /**
2156 * Accessibility: Right arrow-like character is
2157 * used in the breadcrumb trail, course navigation menu
2158 * (previous/next activity), calendar, and search forum block.
2159 * If the theme does not set characters, appropriate defaults
2160 * are set automatically. Please DO NOT
2161 * use &lt; &gt; &raquo; - these are confusing for blind users.
2162 * @return string
2163 */
2164 public function larrow() {
2165 return $this->page->theme->larrow;
2166 }
088ccb43
PS
2167
2168 /**
2169 * Returns the colours of the small MP3 player
2170 * @return string
2171 */
2172 public function filter_mediaplugin_colors() {
2173 return $this->page->theme->filter_mediaplugin_colors;
2174 }
2175
2176 /**
2177 * Returns the colours of the big MP3 player
2178 * @return string
2179 */
2180 public function resource_mp3player_colors() {
2181 return $this->page->theme->resource_mp3player_colors;
2182 }
78946b9b 2183}
d9c8f425 2184
2185
2186/// RENDERERS
2187
2188/**
2189 * A renderer that generates output for command-line scripts.
2190 *
2191 * The implementation of this renderer is probably incomplete.
2192 *
2193 * @copyright 2009 Tim Hunt
2194 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2195 * @since Moodle 2.0
2196 */
56cbc53b 2197class core_renderer_cli extends core_renderer {
d9c8f425 2198 /**
2199 * Returns the page header.
2200 * @return string HTML fragment
2201 */
2202 public function header() {
2203 output_starting_hook();
2204 return $this->page->heading . "\n";
2205 }
2206
2207 /**
2208 * Returns a template fragment representing a Heading.
2209 * @param string $text The text of the heading
2210 * @param int $level The level of importance of the heading
2211 * @param string $classes A space-separated list of CSS classes
2212 * @param string $id An optional ID
2213 * @return string A template fragment for a heading
2214 */
0fddc031 2215 public function heading($text, $level = 2, $classes = 'main', $id = null) {
d9c8f425 2216 $text .= "\n";
2217 switch ($level) {
2218 case 1:
2219 return '=>' . $text;
2220 case 2:
2221 return '-->' . $text;
2222 default:
2223 return $text;
2224 }
2225 }
2226
2227 /**
2228 * Returns a template fragment representing a fatal error.
2229 * @param string $message The message to output
2230 * @param string $moreinfourl URL where more info can be found about the error
2231 * @param string $link Link for the Continue button
2232 * @param array $backtrace The execution backtrace
2233 * @param string $debuginfo Debugging information
d9c8f425 2234 * @return string A template fragment for a fatal error
2235 */
83267ec0 2236 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
d9c8f425 2237 $output = "!!! $message !!!\n";
2238
2239 if (debugging('', DEBUG_DEVELOPER)) {
2240 if (!empty($debuginfo)) {
2241 $this->notification($debuginfo, 'notifytiny');
2242 }
2243 if (!empty($backtrace)) {
2244 $this->notification('Stack trace: ' . format_backtrace($backtrace, true), 'notifytiny');
2245 }
2246 }
2247 }
2248
2249 /**
2250 * Returns a template fragment representing a notification.
2251 * @param string $message The message to include
2252 * @param string $classes A space-separated list of CSS classes
2253 * @return string A template fragment for a notification
2254 */
2255 public function notification($message, $classes = 'notifyproblem') {
2256 $message = clean_text($message);
2257 if ($classes === 'notifysuccess') {
2258 return "++ $message ++\n";
2259 }
2260 return "!! $message !!\n";
2261 }
2262}
2263
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2264
2265/**
2266 * A renderer that generates output for ajax scripts.
2267 *
2268 * This renderer prevents accidental sends back only json
2269 * encoded error messages, all other output is ignored.
2270 *
2271 * @copyright 2010 Petr Skoda
2272 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2273 * @since Moodle 2.0
2274 */
2275class core_renderer_ajax extends core_renderer {
2276 /**
2277 * Returns a template fragment representing a fatal error.
2278 * @param string $message The message to output
2279 * @param string $moreinfourl URL where more info can be found about the error
2280 * @param string $link Link for the Continue button
2281 * @param array $backtrace The execution backtrace
2282 * @param string $debuginfo Debugging information
2283 * @return string A template fragment for a fatal error
2284 */
2285 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2286 $e = new stdClass();
2287 $e->error = $message;
2288 $e->stacktrace = NULL;
2289 $e->debuginfo = NULL;
2290 if (!empty($CFG->debug) and $CFG->debug >= DEBUG_DEVELOPER) {
2291 if (!empty($debuginfo)) {
2292 $e->debuginfo = $debuginfo;
2293 }
2294 if (!empty($backtrace)) {
2295 $e->stacktrace = format_backtrace($backtrace, true);
2296 }
2297 }
2298 return json_encode($e);
2299 }
2300
2301 public function notification($message, $classes = 'notifyproblem') {
2302 }
2303 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
2304 }
2305 public function header() {
2306 }
2307 public function footer() {
2308 }
0fddc031 2309 public function heading($text, $level = 2, $classes = 'main', $id = null) {
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2310 }
2311}
2312