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

   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   * Question type class for the drag-and-drop onto image question type.
  19   *
  20   * @package    qtype_ddimageortext
  21   * @copyright  2009 The Open University
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->dirroot . '/question/type/ddimageortext/questiontypebase.php');
  29  
  30  /**
  31   * The drag-and-drop onto image question type class.
  32   *
  33   * @copyright  2009 The Open University
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class qtype_ddimageortext extends qtype_ddtoimage_base {
  37  
  38      protected function make_choice($dragdata) {
  39          return new qtype_ddimageortext_drag_item($dragdata->label, $dragdata->no,
  40                                          $dragdata->draggroup, $dragdata->infinite, $dragdata->id);
  41      }
  42  
  43      protected function make_place($dropzonedata) {
  44          return new qtype_ddimageortext_drop_zone($dropzonedata->label, $dropzonedata->no,
  45                                                      $dropzonedata->group,
  46                                                      $dropzonedata->xleft, $dropzonedata->ytop);
  47      }
  48  
  49      protected function make_hint($hint) {
  50          return question_hint_with_parts::load_from_record($hint);
  51      }
  52  
  53      public function save_question_options($formdata) {
  54          global $DB, $USER;
  55          $context = $formdata->context;
  56  
  57          $options = $DB->get_record('qtype_ddimageortext', array('questionid' => $formdata->id));
  58          if (!$options) {
  59              $options = new stdClass();
  60              $options->questionid = $formdata->id;
  61              $options->correctfeedback = '';
  62              $options->partiallycorrectfeedback = '';
  63              $options->incorrectfeedback = '';
  64              $options->id = $DB->insert_record('qtype_ddimageortext', $options);
  65          }
  66  
  67          $options->shuffleanswers = !empty($formdata->shuffleanswers);
  68          $options = $this->save_combined_feedback_helper($options, $formdata, $context, true);
  69          $this->save_hints($formdata, true);
  70          $DB->update_record('qtype_ddimageortext', $options);
  71          $DB->delete_records('qtype_ddimageortext_drops', array('questionid' => $formdata->id));
  72          foreach (array_keys($formdata->drops) as $dropno) {
  73              if ($formdata->drops[$dropno]['choice'] == 0) {
  74                  continue;
  75              }
  76              $drop = new stdClass();
  77              $drop->questionid = $formdata->id;
  78              $drop->no = $dropno + 1;
  79              $drop->xleft = $formdata->drops[$dropno]['xleft'];
  80              $drop->ytop = $formdata->drops[$dropno]['ytop'];
  81              $drop->choice = $formdata->drops[$dropno]['choice'];
  82              $drop->label = $formdata->drops[$dropno]['droplabel'];
  83  
  84              $DB->insert_record('qtype_ddimageortext_drops', $drop);
  85          }
  86  
  87          // An array of drag no -> drag id.
  88          $olddragids = $DB->get_records_menu('qtype_ddimageortext_drags',
  89                                      array('questionid' => $formdata->id),
  90                                      '', 'no, id');
  91          foreach (array_keys($formdata->drags) as $dragno) {
  92              $info = file_get_draft_area_info($formdata->dragitem[$dragno]);
  93              if ($info['filecount'] > 0 || (trim($formdata->draglabel[$dragno]) != '')) {
  94                  $draftitemid = $formdata->dragitem[$dragno];
  95  
  96                  $drag = new stdClass();
  97                  $drag->questionid = $formdata->id;
  98                  $drag->no = $dragno + 1;
  99                  $drag->draggroup = $formdata->drags[$dragno]['draggroup'];
 100                  $drag->infinite = empty($formdata->drags[$dragno]['infinite']) ? 0 : 1;
 101                  $drag->label = $formdata->draglabel[$dragno];
 102  
 103                  if (isset($olddragids[$dragno + 1])) {
 104                      $drag->id = $olddragids[$dragno + 1];
 105                      unset($olddragids[$dragno + 1]);
 106                      $DB->update_record('qtype_ddimageortext_drags', $drag);
 107                  } else {
 108                      $drag->id = $DB->insert_record('qtype_ddimageortext_drags', $drag);
 109                  }
 110  
 111                  if ($formdata->drags[$dragno]['dragitemtype'] == 'image') {
 112                      file_save_draft_area_files($draftitemid, $formdata->context->id,
 113                                          'qtype_ddimageortext', 'dragimage', $drag->id,
 114                                          array('subdirs' => 0, 'maxbytes' => 0, 'maxfiles' => 1));
 115                  } else {
 116                      // Delete any existing files for draggable text item type.
 117                      $fs = get_file_storage();
 118                      $fs->delete_area_files($formdata->context->id, 'qtype_ddimageortext',
 119                                                                  'dragimage', $drag->id);
 120                  }
 121  
 122              }
 123  
 124          }
 125  
 126          if (!empty($olddragids)) {
 127              list($sql, $params) = $DB->get_in_or_equal(array_values($olddragids));
 128              $DB->delete_records_select('qtype_ddimageortext_drags', "id $sql", $params);
 129          }
 130          file_save_draft_area_files($formdata->bgimage, $formdata->context->id,
 131                                      'qtype_ddimageortext', 'bgimage', $formdata->id,
 132                                      array('subdirs' => 0, 'maxbytes' => 0, 'maxfiles' => 1));
 133      }
 134      public function move_files($questionid, $oldcontextid, $newcontextid) {
 135          global $DB;
 136          $fs = get_file_storage();
 137  
 138          parent::move_files($questionid, $oldcontextid, $newcontextid);
 139          $fs->move_area_files_to_new_context($oldcontextid,
 140                                      $newcontextid, 'qtype_ddimageortext', 'bgimage', $questionid);
 141          $dragids = $DB->get_records_menu('qtype_ddimageortext_drags',
 142                                                  array('questionid' => $questionid), 'id', 'id,1');
 143          foreach ($dragids as $dragid => $notused) {
 144              $fs->move_area_files_to_new_context($oldcontextid,
 145                                      $newcontextid, 'qtype_ddimageortext', 'dragimage', $dragid);
 146          }
 147  
 148          $this->move_files_in_combined_feedback($questionid, $oldcontextid, $newcontextid);
 149          $this->move_files_in_hints($questionid, $oldcontextid, $newcontextid);
 150      }
 151  
 152      /**
 153       * Delete all the files belonging to this question.
 154       * @param int $questionid the question being deleted.
 155       * @param int $contextid the context the question is in.
 156       */
 157  
 158      protected function delete_files($questionid, $contextid) {
 159          global $DB;
 160          $fs = get_file_storage();
 161  
 162          parent::delete_files($questionid, $contextid);
 163  
 164          $dragids = $DB->get_records_menu('qtype_ddimageortext_drags',
 165                                                  array('questionid' => $questionid), 'id', 'id,1');
 166          foreach ($dragids as $dragid => $notused) {
 167              $fs->delete_area_files($contextid, 'qtype_ddimageortext', 'dragimage', $dragid);
 168          }
 169  
 170          $this->delete_files_in_combined_feedback($questionid, $contextid);
 171          $this->delete_files_in_hints($questionid, $contextid);
 172      }
 173  
 174  
 175      public function export_to_xml($question, qformat_xml $format, $extra = null) {
 176          $fs = get_file_storage();
 177          $contextid = $question->contextid;
 178          $output = '';
 179  
 180          if ($question->options->shuffleanswers) {
 181              $output .= "    <shuffleanswers/>\n";
 182          }
 183          $output .= $format->write_combined_feedback($question->options,
 184                                                      $question->id,
 185                                                      $question->contextid);
 186          $files = $fs->get_area_files($contextid, 'qtype_ddimageortext', 'bgimage', $question->id);
 187          $output .= "    ".$this->write_files($files, 2)."\n";;
 188  
 189          foreach ($question->options->drags as $drag) {
 190              $files =
 191                      $fs->get_area_files($contextid, 'qtype_ddimageortext', 'dragimage', $drag->id);
 192              $output .= "    <drag>\n";
 193              $output .= "      <no>{$drag->no}</no>\n";
 194              $output .= $format->writetext($drag->label, 3)."\n";
 195              $output .= "      <draggroup>{$drag->draggroup}</draggroup>\n";
 196              if ($drag->infinite) {
 197                  $output .= "      <infinite/>\n";
 198              }
 199              $output .= $this->write_files($files, 3);
 200              $output .= "    </drag>\n";
 201          }
 202          foreach ($question->options->drops as $drop) {
 203              $output .= "    <drop>\n";
 204              $output .= $format->writetext($drop->label, 3);
 205              $output .= "      <no>{$drop->no}</no>\n";
 206              $output .= "      <choice>{$drop->choice}</choice>\n";
 207              $output .= "      <xleft>{$drop->xleft}</xleft>\n";
 208              $output .= "      <ytop>{$drop->ytop}</ytop>\n";
 209              $output .= "    </drop>\n";
 210          }
 211  
 212          return $output;
 213      }
 214  
 215      public function import_from_xml($data, $question, qformat_xml $format, $extra=null) {
 216          if (!isset($data['@']['type']) || $data['@']['type'] != 'ddimageortext') {
 217              return false;
 218          }
 219  
 220          $question = $format->import_headers($data);
 221          $question->qtype = 'ddimageortext';
 222  
 223          $question->shuffleanswers = array_key_exists('shuffleanswers',
 224                                                      $format->getpath($data, array('#'), array()));
 225  
 226          $filexml = $format->getpath($data, array('#', 'file'), array());
 227          $question->bgimage = $format->import_files_as_draft($filexml);
 228          $drags = $data['#']['drag'];
 229          $question->drags = array();
 230  
 231          foreach ($drags as $dragxml) {
 232              $dragno = $format->getpath($dragxml, array('#', 'no', 0, '#'), 0);
 233              $dragindex = $dragno - 1;
 234              $question->drags[$dragindex] = array();
 235              $question->draglabel[$dragindex] =
 236                          $format->getpath($dragxml, array('#', 'text', 0, '#'), '', true);
 237              $question->drags[$dragindex]['infinite'] = array_key_exists('infinite', $dragxml['#']);
 238              $question->drags[$dragindex]['draggroup'] =
 239                          $format->getpath($dragxml, array('#', 'draggroup', 0, '#'), 1);
 240              $filexml = $format->getpath($dragxml, array('#', 'file'), array());
 241              $question->dragitem[$dragindex] = $format->import_files_as_draft($filexml);
 242              if (count($filexml)) {
 243                  $question->drags[$dragindex]['dragitemtype'] = 'image';
 244              } else {
 245                  $question->drags[$dragindex]['dragitemtype'] = 'word';
 246              }
 247          }
 248  
 249          $drops = $data['#']['drop'];
 250          $question->drops = array();
 251          foreach ($drops as $dropxml) {
 252              $dropno = $format->getpath($dropxml, array('#', 'no', 0, '#'), 0);
 253              $dropindex = $dropno - 1;
 254              $question->drops[$dropindex] = array();
 255              $question->drops[$dropindex]['choice'] =
 256                          $format->getpath($dropxml, array('#', 'choice', 0, '#'), 0);
 257              $question->drops[$dropindex]['droplabel'] =
 258                          $format->getpath($dropxml, array('#', 'text', 0, '#'), '', true);
 259              $question->drops[$dropindex]['xleft'] =
 260                          $format->getpath($dropxml, array('#', 'xleft', 0, '#'), '');
 261              $question->drops[$dropindex]['ytop'] =
 262                          $format->getpath($dropxml, array('#', 'ytop', 0, '#'), '');
 263          }
 264  
 265          $format->import_combined_feedback($question, $data, true);
 266          $format->import_hints($question, $data, true, false,
 267                  $format->get_format($question->questiontextformat));
 268  
 269          return $question;
 270      }
 271  
 272  }