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Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This file contains main class for Topics course format.
  19   *
  20   * @since     Moodle 2.0
  21   * @package   format_topics
  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  require_once($CFG->dirroot. '/course/format/lib.php');
  28  
  29  use core\output\inplace_editable;
  30  
  31  /**
  32   * Main class for the Topics course format.
  33   *
  34   * @package    format_topics
  35   * @copyright  2012 Marina Glancy
  36   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37   */
  38  class format_topics extends core_courseformat\base {
  39  
  40      /**
  41       * Returns true if this course format uses sections.
  42       *
  43       * @return bool
  44       */
  45      public function uses_sections() {
  46          return true;
  47      }
  48  
  49      public function uses_course_index() {
  50          return true;
  51      }
  52  
  53      public function uses_indentation(): bool {
  54          return (get_config('format_topics', 'indentation')) ? true : false;
  55      }
  56  
  57      /**
  58       * Returns the display name of the given section that the course prefers.
  59       *
  60       * Use section name is specified by user. Otherwise use default ("Topic #").
  61       *
  62       * @param int|stdClass $section Section object from database or just field section.section
  63       * @return string Display name that the course format prefers, e.g. "Topic 2"
  64       */
  65      public function get_section_name($section) {
  66          $section = $this->get_section($section);
  67          if ((string)$section->name !== '') {
  68              return format_string($section->name, true,
  69                  ['context' => context_course::instance($this->courseid)]);
  70          } else {
  71              return $this->get_default_section_name($section);
  72          }
  73      }
  74  
  75      /**
  76       * Returns the default section name for the topics course format.
  77       *
  78       * If the section number is 0, it will use the string with key = section0name from the course format's lang file.
  79       * If the section number is not 0, the base implementation of course_format::get_default_section_name which uses
  80       * the string with the key = 'sectionname' from the course format's lang file + the section number will be used.
  81       *
  82       * @param stdClass $section Section object from database or just field course_sections section
  83       * @return string The default value for the section name.
  84       */
  85      public function get_default_section_name($section) {
  86          if ($section->section == 0) {
  87              // Return the general section.
  88              return get_string('section0name', 'format_topics');
  89          } else {
  90              // Use course_format::get_default_section_name implementation which
  91              // will display the section name in "Topic n" format.
  92              return parent::get_default_section_name($section);
  93          }
  94      }
  95  
  96      /**
  97       * Generate the title for this section page.
  98       *
  99       * @return string the page title
 100       */
 101      public function page_title(): string {
 102          return get_string('topicoutline');
 103      }
 104  
 105      /**
 106       * The URL to use for the specified course (with section).
 107       *
 108       * @param int|stdClass $section Section object from database or just field course_sections.section
 109       *     if omitted the course view page is returned
 110       * @param array $options options for view URL. At the moment core uses:
 111       *     'navigation' (bool) if true and section has no separate page, the function returns null
 112       *     'sr' (int) used by multipage formats to specify to which section to return
 113       * @return null|moodle_url
 114       */
 115      public function get_view_url($section, $options = []) {
 116          global $CFG;
 117          $course = $this->get_course();
 118          $url = new moodle_url('/course/view.php', ['id' => $course->id]);
 119  
 120          $sr = null;
 121          if (array_key_exists('sr', $options)) {
 122              $sr = $options['sr'];
 123          }
 124          if (is_object($section)) {
 125              $sectionno = $section->section;
 126          } else {
 127              $sectionno = $section;
 128          }
 129          if ($sectionno !== null) {
 130              if ($sr !== null) {
 131                  if ($sr) {
 132                      $usercoursedisplay = COURSE_DISPLAY_MULTIPAGE;
 133                      $sectionno = $sr;
 134                  } else {
 135                      $usercoursedisplay = COURSE_DISPLAY_SINGLEPAGE;
 136                  }
 137              } else {
 138                  $usercoursedisplay = $course->coursedisplay ?? COURSE_DISPLAY_SINGLEPAGE;
 139              }
 140              if ($sectionno != 0 && $usercoursedisplay == COURSE_DISPLAY_MULTIPAGE) {
 141                  $url->param('section', $sectionno);
 142              } else {
 143                  if (empty($CFG->linkcoursesections) && !empty($options['navigation'])) {
 144                      return null;
 145                  }
 146                  $url->set_anchor('section-'.$sectionno);
 147              }
 148          }
 149          return $url;
 150      }
 151  
 152      /**
 153       * Returns the information about the ajax support in the given source format.
 154       *
 155       * The returned object's property (boolean)capable indicates that
 156       * the course format supports Moodle course ajax features.
 157       *
 158       * @return stdClass
 159       */
 160      public function supports_ajax() {
 161          $ajaxsupport = new stdClass();
 162          $ajaxsupport->capable = true;
 163          return $ajaxsupport;
 164      }
 165  
 166      public function supports_components() {
 167          return true;
 168      }
 169  
 170      /**
 171       * Loads all of the course sections into the navigation.
 172       *
 173       * @param global_navigation $navigation
 174       * @param navigation_node $node The course node within the navigation
 175       * @return void
 176       */
 177      public function extend_course_navigation($navigation, navigation_node $node) {
 178          global $PAGE;
 179          // If section is specified in course/view.php, make sure it is expanded in navigation.
 180          if ($navigation->includesectionnum === false) {
 181              $selectedsection = optional_param('section', null, PARAM_INT);
 182              if ($selectedsection !== null && (!defined('AJAX_SCRIPT') || AJAX_SCRIPT == '0') &&
 183                      $PAGE->url->compare(new moodle_url('/course/view.php'), URL_MATCH_BASE)) {
 184                  $navigation->includesectionnum = $selectedsection;
 185              }
 186          }
 187  
 188          // Check if there are callbacks to extend course navigation.
 189          parent::extend_course_navigation($navigation, $node);
 190  
 191          // We want to remove the general section if it is empty.
 192          $modinfo = get_fast_modinfo($this->get_course());
 193          $sections = $modinfo->get_sections();
 194          if (!isset($sections[0])) {
 195              // The general section is empty to find the navigation node for it we need to get its ID.
 196              $section = $modinfo->get_section_info(0);
 197              $generalsection = $node->get($section->id, navigation_node::TYPE_SECTION);
 198              if ($generalsection) {
 199                  // We found the node - now remove it.
 200                  $generalsection->remove();
 201              }
 202          }
 203      }
 204  
 205      /**
 206       * Custom action after section has been moved in AJAX mode.
 207       *
 208       * Used in course/rest.php
 209       *
 210       * @return array This will be passed in ajax respose
 211       */
 212      public function ajax_section_move() {
 213          global $PAGE;
 214          $titles = [];
 215          $course = $this->get_course();
 216          $modinfo = get_fast_modinfo($course);
 217          $renderer = $this->get_renderer($PAGE);
 218          if ($renderer && ($sections = $modinfo->get_section_info_all())) {
 219              foreach ($sections as $number => $section) {
 220                  $titles[$number] = $renderer->section_title($section, $course);
 221              }
 222          }
 223          return ['sectiontitles' => $titles, 'action' => 'move'];
 224      }
 225  
 226      /**
 227       * Returns the list of blocks to be automatically added for the newly created course.
 228       *
 229       * @return array of default blocks, must contain two keys BLOCK_POS_LEFT and BLOCK_POS_RIGHT
 230       *     each of values is an array of block names (for left and right side columns)
 231       */
 232      public function get_default_blocks() {
 233          return [
 234              BLOCK_POS_LEFT => [],
 235              BLOCK_POS_RIGHT => [],
 236          ];
 237      }
 238  
 239      /**
 240       * Definitions of the additional options that this course format uses for course.
 241       *
 242       * Topics format uses the following options:
 243       * - coursedisplay
 244       * - hiddensections
 245       *
 246       * @param bool $foreditform
 247       * @return array of options
 248       */
 249      public function course_format_options($foreditform = false) {
 250          static $courseformatoptions = false;
 251          if ($courseformatoptions === false) {
 252              $courseconfig = get_config('moodlecourse');
 253              $courseformatoptions = [
 254                  'hiddensections' => [
 255                      'default' => $courseconfig->hiddensections,
 256                      'type' => PARAM_INT,
 257                  ],
 258                  'coursedisplay' => [
 259                      'default' => $courseconfig->coursedisplay,
 260                      'type' => PARAM_INT,
 261                  ],
 262              ];
 263          }
 264          if ($foreditform && !isset($courseformatoptions['coursedisplay']['label'])) {
 265              $courseformatoptionsedit = [
 266                  'hiddensections' => [
 267                      'label' => new lang_string('hiddensections'),
 268                      'help' => 'hiddensections',
 269                      'help_component' => 'moodle',
 270                      'element_type' => 'select',
 271                      'element_attributes' => [
 272                          [
 273                              0 => new lang_string('hiddensectionscollapsed'),
 274                              1 => new lang_string('hiddensectionsinvisible')
 275                          ],
 276                      ],
 277                  ],
 278                  'coursedisplay' => [
 279                      'label' => new lang_string('coursedisplay'),
 280                      'element_type' => 'select',
 281                      'element_attributes' => [
 282                          [
 283                              COURSE_DISPLAY_SINGLEPAGE => new lang_string('coursedisplay_single'),
 284                              COURSE_DISPLAY_MULTIPAGE => new lang_string('coursedisplay_multi'),
 285                          ],
 286                      ],
 287                      'help' => 'coursedisplay',
 288                      'help_component' => 'moodle',
 289                  ],
 290              ];
 291              $courseformatoptions = array_merge_recursive($courseformatoptions, $courseformatoptionsedit);
 292          }
 293          return $courseformatoptions;
 294      }
 295  
 296      /**
 297       * Adds format options elements to the course/section edit form.
 298       *
 299       * This function is called from {@link course_edit_form::definition_after_data()}.
 300       *
 301       * @param MoodleQuickForm $mform form the elements are added to.
 302       * @param bool $forsection 'true' if this is a section edit form, 'false' if this is course edit form.
 303       * @return array array of references to the added form elements.
 304       */
 305      public function create_edit_form_elements(&$mform, $forsection = false) {
 306          global $COURSE;
 307          $elements = parent::create_edit_form_elements($mform, $forsection);
 308  
 309          if (!$forsection && (empty($COURSE->id) || $COURSE->id == SITEID)) {
 310              // Add "numsections" element to the create course form - it will force new course to be prepopulated
 311              // with empty sections.
 312              // The "Number of sections" option is no longer available when editing course, instead teachers should
 313              // delete and add sections when needed.
 314              $courseconfig = get_config('moodlecourse');
 315              $max = (int)$courseconfig->maxsections;
 316              $element = $mform->addElement('select', 'numsections', get_string('numberweeks'), range(0, $max ?: 52));
 317              $mform->setType('numsections', PARAM_INT);
 318              if (is_null($mform->getElementValue('numsections'))) {
 319                  $mform->setDefault('numsections', $courseconfig->numsections);
 320              }
 321              array_unshift($elements, $element);
 322          }
 323  
 324          return $elements;
 325      }
 326  
 327      /**
 328       * Updates format options for a course.
 329       *
 330       * In case if course format was changed to 'topics', we try to copy options
 331       * 'coursedisplay' and 'hiddensections' from the previous format.
 332       *
 333       * @param stdClass|array $data return value from {@link moodleform::get_data()} or array with data
 334       * @param stdClass $oldcourse if this function is called from {@link update_course()}
 335       *     this object contains information about the course before update
 336       * @return bool whether there were any changes to the options values
 337       */
 338      public function update_course_format_options($data, $oldcourse = null) {
 339          $data = (array)$data;
 340          if ($oldcourse !== null) {
 341              $oldcourse = (array)$oldcourse;
 342              $options = $this->course_format_options();
 343              foreach ($options as $key => $unused) {
 344                  if (!array_key_exists($key, $data)) {
 345                      if (array_key_exists($key, $oldcourse)) {
 346                          $data[$key] = $oldcourse[$key];
 347                      }
 348                  }
 349              }
 350          }
 351          return $this->update_format_options($data);
 352      }
 353  
 354      /**
 355       * Whether this format allows to delete sections.
 356       *
 357       * Do not call this function directly, instead use {@link course_can_delete_section()}
 358       *
 359       * @param int|stdClass|section_info $section
 360       * @return bool
 361       */
 362      public function can_delete_section($section) {
 363          return true;
 364      }
 365  
 366      /**
 367       * Prepares the templateable object to display section name.
 368       *
 369       * @param \section_info|\stdClass $section
 370       * @param bool $linkifneeded
 371       * @param bool $editable
 372       * @param null|lang_string|string $edithint
 373       * @param null|lang_string|string $editlabel
 374       * @return inplace_editable
 375       */
 376      public function inplace_editable_render_section_name($section, $linkifneeded = true,
 377              $editable = null, $edithint = null, $editlabel = null) {
 378          if (empty($edithint)) {
 379              $edithint = new lang_string('editsectionname', 'format_topics');
 380          }
 381          if (empty($editlabel)) {
 382              $title = get_section_name($section->course, $section);
 383              $editlabel = new lang_string('newsectionname', 'format_topics', $title);
 384          }
 385          return parent::inplace_editable_render_section_name($section, $linkifneeded, $editable, $edithint, $editlabel);
 386      }
 387  
 388      /**
 389       * Indicates whether the course format supports the creation of a news forum.
 390       *
 391       * @return bool
 392       */
 393      public function supports_news() {
 394          return true;
 395      }
 396  
 397      /**
 398       * Returns whether this course format allows the activity to
 399       * have "triple visibility state" - visible always, hidden on course page but available, hidden.
 400       *
 401       * @param stdClass|cm_info $cm course module (may be null if we are displaying a form for adding a module)
 402       * @param stdClass|section_info $section section where this module is located or will be added to
 403       * @return bool
 404       */
 405      public function allow_stealth_module_visibility($cm, $section) {
 406          // Allow the third visibility state inside visible sections or in section 0.
 407          return !$section->section || $section->visible;
 408      }
 409  
 410      /**
 411       * Callback used in WS core_course_edit_section when teacher performs an AJAX action on a section (show/hide).
 412       *
 413       * Access to the course is already validated in the WS but the callback has to make sure
 414       * that particular action is allowed by checking capabilities
 415       *
 416       * Course formats should register.
 417       *
 418       * @param section_info|stdClass $section
 419       * @param string $action
 420       * @param int $sr
 421       * @return null|array any data for the Javascript post-processor (must be json-encodeable)
 422       */
 423      public function section_action($section, $action, $sr) {
 424          global $PAGE;
 425  
 426          if ($section->section && ($action === 'setmarker' || $action === 'removemarker')) {
 427              // Format 'topics' allows to set and remove markers in addition to common section actions.
 428              require_capability('moodle/course:setcurrentsection', context_course::instance($this->courseid));
 429              course_set_marker($this->courseid, ($action === 'setmarker') ? $section->section : 0);
 430              return null;
 431          }
 432  
 433          // For show/hide actions call the parent method and return the new content for .section_availability element.
 434          $rv = parent::section_action($section, $action, $sr);
 435          $renderer = $PAGE->get_renderer('format_topics');
 436  
 437          if (!($section instanceof section_info)) {
 438              $modinfo = course_modinfo::instance($this->courseid);
 439              $section = $modinfo->get_section_info($section->section);
 440          }
 441          $elementclass = $this->get_output_classname('content\\section\\availability');
 442          $availability = new $elementclass($this, $section);
 443  
 444          $rv['section_availability'] = $renderer->render($availability);
 445          return $rv;
 446      }
 447  
 448      /**
 449       * Return the plugin configs for external functions.
 450       *
 451       * @return array the list of configuration settings
 452       * @since Moodle 3.5
 453       */
 454      public function get_config_for_external() {
 455          // Return everything (nothing to hide).
 456          $formatoptions = $this->get_format_options();
 457          $formatoptions['indentation'] = get_config('format_topics', 'indentation');
 458          return $formatoptions;
 459      }
 460  }
 461  
 462  /**
 463   * Implements callback inplace_editable() allowing to edit values in-place.
 464   *
 465   * @param string $itemtype
 466   * @param int $itemid
 467   * @param mixed $newvalue
 468   * @return inplace_editable
 469   */
 470  function format_topics_inplace_editable($itemtype, $itemid, $newvalue) {
 471      global $DB, $CFG;
 472      require_once($CFG->dirroot . '/course/lib.php');
 473      if ($itemtype === 'sectionname' || $itemtype === 'sectionnamenl') {
 474          $section = $DB->get_record_sql(
 475              'SELECT s.* FROM {course_sections} s JOIN {course} c ON s.course = c.id WHERE s.id = ? AND c.format = ?',
 476              [$itemid, 'topics'], MUST_EXIST);
 477          return course_get_format($section->course)->inplace_editable_update_section_name($section, $itemtype, $newvalue);
 478      }
 479  }