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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.

Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403] [Versions 39 and 310]

   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   * Moodle renderer used to display special elements of the lesson module
  20   *
  21   * @package mod_lesson
  22   * @copyright  2009 Sam Hemelryk
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   **/
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  class mod_lesson_renderer extends plugin_renderer_base {
  29      /**
  30       * Returns the header for the lesson module
  31       *
  32       * @param lesson $lesson a lesson object.
  33       * @param string $currenttab current tab that is shown.
  34       * @param bool   $extraeditbuttons if extra edit buttons should be displayed.
  35       * @param int    $lessonpageid id of the lesson page that needs to be displayed.
  36       * @param string $extrapagetitle String to appent to the page title.
  37       * @return string
  38       */
  39      public function header($lesson, $cm, $currenttab = '', $extraeditbuttons = false, $lessonpageid = null, $extrapagetitle = null) {
  40          global $CFG;
  41  
  42          $activityname = format_string($lesson->name, true, $lesson->course);
  43          if (empty($extrapagetitle)) {
  44              $title = $this->page->course->shortname.": ".$activityname;
  45          } else {
  46              $title = $this->page->course->shortname.": ".$activityname.": ".$extrapagetitle;
  47          }
  48  
  49          // Build the buttons
  50          $context = context_module::instance($cm->id);
  51  
  52          // Header setup.
  53          $this->page->set_title($title);
  54          $this->page->set_heading($this->page->course->fullname);
  55          lesson_add_header_buttons($cm, $context, $extraeditbuttons, $lessonpageid);
  56          $output = $this->output->header();
  57  
  58          if (has_capability('mod/lesson:manage', $context)) {
  59              $output .= $this->output->heading_with_help($activityname, 'overview', 'lesson');
  60              // Info box.
  61              if ($lesson->intro) {
  62                  $output .= $this->output->box(format_module_intro('lesson', $lesson, $cm->id), 'generalbox', 'intro');
  63              }
  64              if (!empty($currenttab)) {
  65                  ob_start();
  66                  include($CFG->dirroot.'/mod/lesson/tabs.php');
  67                  $output .= ob_get_contents();
  68                  ob_end_clean();
  69              }
  70          } else {
  71              $output .= $this->output->heading($activityname);
  72              // Info box.
  73              if ($lesson->intro) {
  74                  $output .= $this->output->box(format_module_intro('lesson', $lesson, $cm->id), 'generalbox', 'intro');
  75              }
  76          }
  77  
  78          foreach ($lesson->messages as $message) {
  79              $output .= $this->output->notification($message[0], $message[1], $message[2]);
  80          }
  81  
  82          return $output;
  83      }
  84  
  85      /**
  86       * Returns the footer
  87       * @return string
  88       */
  89      public function footer() {
  90          return $this->output->footer();
  91      }
  92  
  93      /**
  94       * Returns HTML for a lesson inaccessible message
  95       *
  96       * @param string $message
  97       * @return <type>
  98       */
  99      public function lesson_inaccessible($message) {
 100          global $CFG;
 101          $output  =  $this->output->box_start('generalbox boxaligncenter');
 102          $output .=  $this->output->box_start('center');
 103          $output .=  $message;
 104          $output .=  $this->output->box('<a href="'.$CFG->wwwroot.'/course/view.php?id='. $this->page->course->id .'">'. get_string('returnto', 'lesson', format_string($this->page->course->fullname, true)) .'</a>', 'lessonbutton standardbutton');
 105          $output .=  $this->output->box_end();
 106          $output .=  $this->output->box_end();
 107          return $output;
 108      }
 109  
 110      /**
 111       * Returns HTML to prompt the user to log in
 112       * @param lesson $lesson
 113       * @param bool $failedattempt
 114       * @return string
 115       */
 116      public function login_prompt(lesson $lesson, $failedattempt = false) {
 117          global $CFG;
 118          $output  = $this->output->box_start('password-form');
 119          $output .= $this->output->box_start('generalbox boxaligncenter');
 120          $output .=  '<form id="password" method="post" action="'.$CFG->wwwroot.'/mod/lesson/view.php" autocomplete="off">';
 121          $output .=  '<fieldset class="invisiblefieldset center">';
 122          $output .=  '<input type="hidden" name="id" value="'. $this->page->cm->id .'" />';
 123          $output .=  '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
 124          if ($failedattempt) {
 125              $output .=  $this->output->notification(get_string('loginfail', 'lesson'));
 126          }
 127          $output .= get_string('passwordprotectedlesson', 'lesson', format_string($lesson->name)).'<br /><br />';
 128          $output .= get_string('enterpassword', 'lesson')." <input type=\"password\" name=\"userpassword\" /><br /><br />";
 129          $output .= "<div class='lessonbutton standardbutton submitbutton'><input type='submit' value='".get_string('continue', 'lesson')."' /></div>";
 130          $output .= " <div class='lessonbutton standardbutton submitbutton'><input type='submit' name='backtocourse' value='".get_string('cancel', 'lesson')."' /></div>";
 131          $output .=  '</fieldset></form>';
 132          $output .=  $this->output->box_end();
 133          $output .=  $this->output->box_end();
 134          return $output;
 135      }
 136  
 137      /**
 138       * Returns HTML to display dependancy errors
 139       *
 140       * @param object $dependentlesson
 141       * @param array $errors
 142       * @return string
 143       */
 144      public function dependancy_errors($dependentlesson, $errors) {
 145          $output  = $this->output->box_start('generalbox boxaligncenter');
 146          $output .= get_string('completethefollowingconditions', 'lesson', $dependentlesson->name);
 147          $output .= $this->output->box(implode('<br />'.get_string('and', 'lesson').'<br />', $errors),'center');
 148          $output .= $this->output->box_end();
 149          return $output;
 150      }
 151  
 152      /**
 153       * Returns HTML to display a message
 154       * @param string $message
 155       * @param single_button $button
 156       * @return string
 157       */
 158      public function message($message, single_button $button = null) {
 159          $output  = $this->output->box_start('generalbox boxaligncenter');
 160          $output .= $message;
 161          if ($button !== null) {
 162              $output .= $this->output->box($this->output->render($button), 'lessonbutton standardbutton');
 163          }
 164          $output .= $this->output->box_end();
 165          return $output;
 166      }
 167  
 168      /**
 169       * Returns HTML to display a continue button
 170       * @param lesson $lesson
 171       * @param int $lastpageseen
 172       * @return string
 173       */
 174      public function continue_links(lesson $lesson, $lastpageseenid) {
 175          global $CFG;
 176          $output = $this->output->box(get_string('youhaveseen','lesson'), 'generalbox boxaligncenter');
 177          $output .= $this->output->box_start('center');
 178  
 179          $yeslink = html_writer::link(new moodle_url('/mod/lesson/view.php', array('id' => $this->page->cm->id,
 180              'pageid' => $lastpageseenid, 'startlastseen' => 'yes')), get_string('yes'), array('class' => 'btn btn-primary'));
 181          $output .= html_writer::tag('span', $yeslink, array('class'=>'lessonbutton standardbutton'));
 182          $output .= '&nbsp;';
 183  
 184          $nolink = html_writer::link(new moodle_url('/mod/lesson/view.php', array('id' => $this->page->cm->id,
 185              'pageid' => $lesson->firstpageid, 'startlastseen' => 'no')), get_string('no'), array('class' => 'btn btn-secondary'));
 186          $output .= html_writer::tag('span', $nolink, array('class'=>'lessonbutton standardbutton'));
 187  
 188          $output .= $this->output->box_end();
 189          return $output;
 190      }
 191  
 192      /**
 193       * Returns HTML to display a page to the user
 194       * @param lesson $lesson
 195       * @param lesson_page $page
 196       * @param object $attempt
 197       * @return string
 198       */
 199      public function display_page(lesson $lesson, lesson_page $page, $attempt) {
 200          // We need to buffer here as there is an mforms display call
 201          ob_start();
 202          echo $page->display($this, $attempt);
 203          $output = ob_get_contents();
 204          ob_end_clean();
 205          return $output;
 206      }
 207  
 208      /**
 209       * Returns HTML to display a collapsed edit form
 210       *
 211       * @param lesson $lesson
 212       * @param int $pageid
 213       * @return string
 214       */
 215      public function display_edit_collapsed(lesson $lesson, $pageid) {
 216          global $DB, $CFG;
 217  
 218          $manager = lesson_page_type_manager::get($lesson);
 219          $qtypes = $manager->get_page_type_strings();
 220          $npages = count($lesson->load_all_pages());
 221  
 222          $table = new html_table();
 223          $table->head = array(get_string('pagetitle', 'lesson'), get_string('qtype', 'lesson'), get_string('jumps', 'lesson'), get_string('actions', 'lesson'));
 224          $table->align = array('left', 'left', 'left', 'center');
 225          $table->data = array();
 226  
 227          $canedit = has_capability('mod/lesson:edit', context_module::instance($this->page->cm->id));
 228  
 229          while ($pageid != 0) {
 230              $page = $lesson->load_page($pageid);
 231              $data = array();
 232              $url = new moodle_url('/mod/lesson/edit.php', array(
 233                  'id'     => $this->page->cm->id,
 234                  'mode'   => 'single',
 235                  'pageid' => $page->id
 236              ));
 237              $data[] = html_writer::link($url, format_string($page->title, true), array('id' => 'lesson-' . $page->id));
 238              $data[] = $qtypes[$page->qtype];
 239              $data[] = implode("<br />\n", $page->jumps);
 240              if ($canedit) {
 241                  $data[] = $this->page_action_links($page, $npages, true);
 242              } else {
 243                  $data[] = '';
 244              }
 245              $table->data[] = $data;
 246              $pageid = $page->nextpageid;
 247          }
 248  
 249          return html_writer::div(html_writer::table($table), 'table-responsive');
 250      }
 251  
 252      /**
 253       * Returns HTML to display the full edit page
 254       *
 255       * @param lesson $lesson
 256       * @param int $pageid
 257       * @param int $prevpageid
 258       * @param bool $single
 259       * @return string
 260       */
 261      public function display_edit_full(lesson $lesson, $pageid, $prevpageid, $single=false) {
 262          global $DB, $CFG;
 263  
 264          $manager = lesson_page_type_manager::get($lesson);
 265          $qtypes = $manager->get_page_type_strings();
 266          $npages = count($lesson->load_all_pages());
 267          $canedit = has_capability('mod/lesson:edit', context_module::instance($this->page->cm->id));
 268  
 269          $content = '';
 270          if ($canedit) {
 271              $content = $this->add_page_links($lesson, $prevpageid);
 272          }
 273  
 274          $options = new stdClass;
 275          $options->noclean = true;
 276  
 277          while ($pageid != 0 && $single!=='stop') {
 278              $page = $lesson->load_page($pageid);
 279  
 280              $pagetable = new html_table();
 281              $pagetable->align = array('right','left');
 282              $pagetable->width = '100%';
 283              $pagetable->tablealign = 'center';
 284              $pagetable->cellspacing = 0;
 285              $pagetable->cellpadding = '5px';
 286              $pagetable->data = array();
 287  
 288              $pageheading = new html_table_cell();
 289  
 290              $pageheading->text = html_writer::tag('a', '', array('id' => 'lesson-' . $pageid)) . format_string($page->title);
 291              if ($canedit) {
 292                  $pageheading->text .= ' '.$this->page_action_links($page, $npages);
 293              }
 294              $pageheading->style = 'text-align:center';
 295              $pageheading->colspan = 2;
 296              $pageheading->scope = 'col';
 297              $pagetable->head = array($pageheading);
 298  
 299              $cell = new html_table_cell();
 300              $cell->colspan = 2;
 301              $cell->style = 'text-align:left';
 302              $cell->text = $page->contents;
 303              $pagetable->data[] = new html_table_row(array($cell));
 304  
 305              $cell = new html_table_cell();
 306              $cell->colspan = 2;
 307              $cell->style = 'text-align:center';
 308              $cell->text = '<strong>'.$qtypes[$page->qtype] . $page->option_description_string().'</strong>';
 309              $pagetable->data[] = new html_table_row(array($cell));
 310  
 311              $pagetable = $page->display_answers($pagetable);
 312  
 313              $content .= html_writer::start_tag('div');
 314              $content .= html_writer::table($pagetable);
 315              $content .= html_writer::end_tag('div');
 316  
 317              if ($canedit) {
 318                  $content .= $this->add_page_links($lesson, $pageid);
 319              }
 320  
 321              // check the prev links - fix (silently) if necessary - there was a bug in
 322              // versions 1 and 2 when add new pages. Not serious then as the backwards
 323              // links were not used in those versions
 324              if ($page->prevpageid != $prevpageid) {
 325                  // fix it
 326                  $DB->set_field("lesson_pages", "prevpageid", $prevpageid, array("id" => $page->id));
 327                  debugging("<p>***prevpageid of page $page->id set to $prevpageid***");
 328              }
 329  
 330              $prevpageid = $page->id;
 331              $pageid = $page->nextpageid;
 332  
 333              if ($single === true) {
 334                  $single = 'stop';
 335              }
 336  
 337          }
 338  
 339          return $this->output->box($content, 'edit_pages_box');
 340      }
 341  
 342      /**
 343       * Returns HTML to display the add page links
 344       *
 345       * @param lesson $lesson
 346       * @param int $prevpageid
 347       * @return string
 348       */
 349      public function add_page_links(lesson $lesson, $prevpageid=false) {
 350          global $CFG;
 351  
 352          $links = array();
 353  
 354          $importquestionsurl = new moodle_url('/mod/lesson/import.php',array('id'=>$this->page->cm->id, 'pageid'=>$prevpageid));
 355          $links[] = html_writer::link($importquestionsurl, get_string('importquestions', 'lesson'));
 356  
 357          $manager = lesson_page_type_manager::get($lesson);
 358          foreach($manager->get_add_page_type_links($prevpageid) as $link) {
 359              $links[] = html_writer::link($link['addurl'], $link['name']);
 360          }
 361  
 362          $addquestionurl = new moodle_url('/mod/lesson/editpage.php', array('id'=>$this->page->cm->id, 'pageid'=>$prevpageid));
 363          $links[] = html_writer::link($addquestionurl, get_string('addaquestionpagehere', 'lesson'));
 364  
 365          return $this->output->box(implode(" | \n", $links), 'addlinks');
 366      }
 367  
 368      /**
 369       * Return HTML to display add first page links
 370       * @param lesson $lesson
 371       * @return string
 372       */
 373      public function add_first_page_links(lesson $lesson) {
 374          global $CFG;
 375          $prevpageid = 0;
 376  
 377          $output = $this->output->heading(get_string("whatdofirst", "lesson"), 3);
 378          $links = array();
 379  
 380          $importquestionsurl = new moodle_url('/mod/lesson/import.php',array('id'=>$this->page->cm->id, 'pageid'=>$prevpageid));
 381          $links[] = html_writer::link($importquestionsurl, get_string('importquestions', 'lesson'));
 382  
 383          $manager = lesson_page_type_manager::get($lesson);
 384          foreach ($manager->get_add_page_type_links($prevpageid) as $link) {
 385              $link['addurl']->param('firstpage', 1);
 386              $links[] = html_writer::link($link['addurl'], $link['name']);
 387          }
 388  
 389          $addquestionurl = new moodle_url('/mod/lesson/editpage.php', array('id'=>$this->page->cm->id, 'pageid'=>$prevpageid, 'firstpage'=>1));
 390          $links[] = html_writer::link($addquestionurl, get_string('addaquestionpage', 'lesson'));
 391  
 392          return $this->output->box($output.'<p>'.implode('</p><p>', $links).'</p>', 'generalbox firstpageoptions');
 393      }
 394  
 395      /**
 396       * Returns HTML to display action links for a page
 397       *
 398       * @param lesson_page $page
 399       * @param bool $printmove
 400       * @param bool $printaddpage
 401       * @return string
 402       */
 403      public function page_action_links(lesson_page $page, $printmove, $printaddpage=false) {
 404          global $CFG;
 405  
 406          $actions = array();
 407  
 408          if ($printmove) {
 409              $url = new moodle_url('/mod/lesson/lesson.php',
 410                      array('id' => $this->page->cm->id, 'action' => 'move', 'pageid' => $page->id, 'sesskey' => sesskey()));
 411              $label = get_string('movepagenamed', 'lesson', format_string($page->title));
 412              $img = $this->output->pix_icon('t/move', $label);
 413              $actions[] = html_writer::link($url, $img, array('title' => $label));
 414          }
 415          $url = new moodle_url('/mod/lesson/editpage.php', array('id' => $this->page->cm->id, 'pageid' => $page->id, 'edit' => 1));
 416          $label = get_string('updatepagenamed', 'lesson', format_string($page->title));
 417          $img = $this->output->pix_icon('t/edit', $label);
 418          $actions[] = html_writer::link($url, $img, array('title' => $label));
 419  
 420          // Duplicate action.
 421          $url = new moodle_url('/mod/lesson/lesson.php', array('id' => $this->page->cm->id, 'pageid' => $page->id,
 422                  'action' => 'duplicate', 'sesskey' => sesskey()));
 423          $label = get_string('duplicatepagenamed', 'lesson', format_string($page->title));
 424          $img = $this->output->pix_icon('e/copy', $label, 'mod_lesson');
 425          $actions[] = html_writer::link($url, $img, array('title' => $label));
 426  
 427          $url = new moodle_url('/mod/lesson/view.php', array('id' => $this->page->cm->id, 'pageid' => $page->id));
 428          $label = get_string('previewpagenamed', 'lesson', format_string($page->title));
 429          $img = $this->output->pix_icon('t/preview', $label);
 430          $actions[] = html_writer::link($url, $img, array('title' => $label));
 431  
 432          $url = new moodle_url('/mod/lesson/lesson.php',
 433                  array('id' => $this->page->cm->id, 'action' => 'confirmdelete', 'pageid' => $page->id, 'sesskey' => sesskey()));
 434          $label = get_string('deletepagenamed', 'lesson', format_string($page->title));
 435          $img = $this->output->pix_icon('t/delete', $label);
 436          $actions[] = html_writer::link($url, $img, array('title' => $label));
 437  
 438          if ($printaddpage) {
 439              $options = array();
 440              $manager = lesson_page_type_manager::get($page->lesson);
 441              $links = $manager->get_add_page_type_links($page->id);
 442              foreach ($links as $link) {
 443                  $options[$link['type']] = $link['name'];
 444              }
 445              $options[0] = get_string('addaquestionpage', 'lesson');
 446  
 447              $addpageurl = new moodle_url('/mod/lesson/editpage.php', array('id'=>$this->page->cm->id, 'pageid'=>$page->id, 'sesskey'=>sesskey()));
 448              $addpageselect = new single_select($addpageurl, 'qtype', $options, null, array(''=>get_string('addanewpage', 'lesson').'...'), 'addpageafter'.$page->id);
 449              $addpageselect->attributes = ['aria-label' => get_string('actions', 'lesson')];
 450              $addpageselector = $this->output->render($addpageselect);
 451          }
 452  
 453          if (isset($addpageselector)) {
 454              $actions[] = $addpageselector;
 455          }
 456  
 457          return implode(' ', $actions);
 458      }
 459  
 460      /**
 461       * Prints the on going message to the user.
 462       *
 463       * With custom grading On, displays points
 464       * earned out of total points possible thus far.
 465       * With custom grading Off, displays number of correct
 466       * answers out of total attempted.
 467       *
 468       * @param object $lesson The lesson that the user is taking.
 469       * @return void
 470       **/
 471  
 472       /**
 473        * Prints the on going message to the user.
 474        *
 475        * With custom grading On, displays points
 476        * earned out of total points possible thus far.
 477        * With custom grading Off, displays number of correct
 478        * answers out of total attempted.
 479        *
 480        * @param lesson $lesson
 481        * @return string
 482        */
 483      public function ongoing_score(lesson $lesson) {
 484          return $this->output->box($lesson->get_ongoing_score_message(), "ongoing center");
 485      }
 486  
 487      /**
 488       * Returns HTML to display a progress bar of progression through a lesson
 489       *
 490       * @param lesson $lesson
 491       * @param int $progress optional, if empty it will be calculated
 492       * @return string
 493       */
 494      public function progress_bar(lesson $lesson, $progress = null) {
 495          $context = context_module::instance($this->page->cm->id);
 496  
 497          // lesson setting to turn progress bar on or off
 498          if (!$lesson->progressbar) {
 499              return '';
 500          }
 501  
 502          // catch teachers
 503          if (has_capability('mod/lesson:manage', $context)) {
 504              return $this->output->notification(get_string('progressbarteacherwarning2', 'lesson'));
 505          }
 506  
 507          if ($progress === null) {
 508              $progress = $lesson->calculate_progress();
 509          }
 510  
 511          $content = html_writer::start_tag('div');
 512          $content .= html_writer::start_tag('div', array('class' => 'progress'));
 513          $content .= html_writer::start_tag('div', array('class' => 'progress-bar bar', 'role' => 'progressbar',
 514              'style' => 'width: ' . $progress .'%', 'aria-valuenow' => $progress, 'aria-valuemin' => 0, 'aria-valuemax' => 100));
 515          $content .= $progress . "%";
 516          $content .= html_writer::end_tag('div');
 517          $content .= html_writer::end_tag('div');
 518          $printprogress = html_writer::tag('div', get_string('progresscompleted', 'lesson', $progress) . $content);
 519          return $this->output->box($printprogress, 'progress_bar');
 520      }
 521  
 522      /**
 523       * Returns HTML to show the start of a slideshow
 524       * @param lesson $lesson
 525       */
 526      public function slideshow_start(lesson $lesson) {
 527          $attributes = array();
 528          $attributes['class'] = 'slideshow';
 529          $attributes['style'] = 'background-color:'.$lesson->properties()->bgcolor.';height:'.
 530                  $lesson->properties()->height.'px;width:'.$lesson->properties()->width.'px;';
 531          $output = html_writer::start_tag('div', $attributes);
 532          return $output;
 533      }
 534      /**
 535       * Returns HTML to show the end of a slideshow
 536       */
 537      public function slideshow_end() {
 538          $output = html_writer::end_tag('div');
 539          return $output;
 540      }
 541      /**
 542       * Returns a P tag containing contents
 543       * @param string $contents
 544       * @param string $class
 545       */
 546      public function paragraph($contents, $class='') {
 547          $attributes = array();
 548          if ($class !== '') {
 549              $attributes['class'] = $class;
 550          }
 551          $output = html_writer::tag('p', $contents, $attributes);
 552          return $output;
 553      }
 554  
 555      /**
 556       * Returns the HTML for displaying the end of lesson page.
 557       *
 558       * @param  lesson $lesson lesson instance
 559       * @param  stdclass $data lesson data to be rendered
 560       * @return string         HTML contents
 561       */
 562      public function display_eol_page(lesson $lesson, $data) {
 563  
 564          $output = '';
 565          $canmanage = $lesson->can_manage();
 566          $course = $lesson->courserecord;
 567  
 568          if ($lesson->custom && !$canmanage && (($data->gradeinfo->nquestions < $lesson->minquestions))) {
 569              $output .= $this->box_start('generalbox boxaligncenter');
 570          }
 571  
 572          if ($data->gradelesson) {
 573              // We are using level 3 header because the page title is a sub-heading of lesson title (MDL-30911).
 574              $output .= $this->heading(get_string("congratulations", "lesson"), 3);
 575              $output .= $this->box_start('generalbox boxaligncenter');
 576          }
 577  
 578          if ($data->notenoughtimespent !== false) {
 579              $output .= $this->paragraph(get_string("notenoughtimespent", "lesson", $data->notenoughtimespent), 'center');
 580          }
 581  
 582          if ($data->numberofpagesviewed !== false) {
 583              $output .= $this->paragraph(get_string("numberofpagesviewed", "lesson", $data->numberofpagesviewed), 'center');
 584          }
 585          if ($data->youshouldview !== false) {
 586              $output .= $this->paragraph(get_string("youshouldview", "lesson", $data->youshouldview), 'center');
 587          }
 588          if ($data->numberofcorrectanswers !== false) {
 589              $output .= $this->paragraph(get_string("numberofcorrectanswers", "lesson", $data->numberofcorrectanswers), 'center');
 590          }
 591  
 592          if ($data->displayscorewithessays !== false) {
 593              $output .= $this->box(get_string("displayscorewithessays", "lesson", $data->displayscorewithessays), 'center');
 594          } else if ($data->displayscorewithoutessays !== false) {
 595              $output .= $this->box(get_string("displayscorewithoutessays", "lesson", $data->displayscorewithoutessays), 'center');
 596          }
 597  
 598          if ($data->yourcurrentgradeisoutof !== false) {
 599              $output .= $this->paragraph(get_string("yourcurrentgradeisoutof", "lesson", $data->yourcurrentgradeisoutof), 'center');
 600          }
 601          if ($data->eolstudentoutoftimenoanswers !== false) {
 602              $output .= $this->paragraph(get_string("eolstudentoutoftimenoanswers", "lesson"));
 603          }
 604          if ($data->welldone !== false) {
 605              $output .= $this->paragraph(get_string("welldone", "lesson"));
 606          }
 607  
 608          if ($data->progresscompleted !== false) {
 609              $output .= $this->progress_bar($lesson, $data->progresscompleted);
 610          }
 611  
 612          if ($data->displayofgrade !== false) {
 613              $output .= $this->paragraph(get_string("displayofgrade", "lesson"), 'center');
 614          }
 615  
 616          $output .= $this->box_end(); // End of Lesson button to Continue.
 617  
 618          if ($data->reviewlesson !== false) {
 619              $output .= html_writer::link($data->reviewlesson, get_string('reviewlesson', 'lesson'),
 620                  array('class' => 'centerpadded lessonbutton standardbutton pr-3'));
 621          }
 622          if ($data->modattemptsnoteacher !== false) {
 623              $output .= $this->paragraph(get_string("modattemptsnoteacher", "lesson"), 'centerpadded');
 624          }
 625  
 626          if ($data->activitylink !== false) {
 627              $output .= $data->activitylink;
 628          }
 629  
 630          $url = new moodle_url('/course/view.php', array('id' => $course->id));
 631          $output .= html_writer::link($url, get_string('returnto', 'lesson', format_string($course->fullname, true)),
 632                  array('class' => 'centerpadded lessonbutton standardbutton pr-3'));
 633  
 634          if (has_capability('gradereport/user:view', context_course::instance($course->id))
 635                  && $course->showgrades && $lesson->grade != 0 && !$lesson->practice) {
 636              $url = new moodle_url('/grade/index.php', array('id' => $course->id));
 637              $output .= html_writer::link($url, get_string('viewgrades', 'lesson'),
 638                  array('class' => 'centerpadded lessonbutton standardbutton pr-3'));
 639          }
 640          return $output;
 641      }
 642  }