[Summary view] [Print] [Text view]

   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   * Numerical
  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  /** Numerical question type */
  29  define("LESSON_PAGE_NUMERICAL",     "8");
  30  
  31  class lesson_page_type_numerical extends lesson_page {
  32  
  33      protected $type = lesson_page::TYPE_QUESTION;
  34      protected $typeidstring = 'numerical';
  35      protected $typeid = LESSON_PAGE_NUMERICAL;
  36      protected $string = null;
  37  
  38      public function get_typeid() {
  39          return $this->typeid;
  40      }
  41      public function get_typestring() {
  42          if ($this->string===null) {
  43              $this->string = get_string($this->typeidstring, 'lesson');
  44          }
  45          return $this->string;
  46      }
  47      public function get_idstring() {
  48          return $this->typeidstring;
  49      }
  50      public function display($renderer, $attempt) {
  51          global $USER, $CFG, $PAGE;
  52          $mform = new lesson_display_answer_form_shortanswer($CFG->wwwroot.'/mod/lesson/continue.php', array('contents'=>$this->get_contents(), 'lessonid'=>$this->lesson->id));
  53          $data = new stdClass;
  54          $data->id = $PAGE->cm->id;
  55          $data->pageid = $this->properties->id;
  56          if (isset($USER->modattempts[$this->lesson->id])) {
  57              $data->answer = s($attempt->useranswer);
  58          }
  59          $mform->set_data($data);
  60          return $mform->display();
  61      }
  62      public function check_answer() {
  63          global $CFG;
  64          $result = parent::check_answer();
  65  
  66          $mform = new lesson_display_answer_form_shortanswer($CFG->wwwroot.'/mod/lesson/continue.php', array('contents'=>$this->get_contents()));
  67          $data = $mform->get_data();
  68          require_sesskey();
  69  
  70          // set defaults
  71          $result->response = '';
  72          $result->newpageid = 0;
  73  
  74          if (isset($data->answer)) {
  75              // just doing default PARAM_RAW, not doing PARAM_INT because it could be a float
  76              $result->useranswer = (float)$data->answer;
  77          } else {
  78              $result->noanswer = true;
  79              return $result;
  80          }
  81          $result->studentanswer = $result->userresponse = $result->useranswer;
  82          $answers = $this->get_answers();
  83          foreach ($answers as $answer) {
  84              if (strpos($answer->answer, ':')) {
  85                  // there's a pairs of values
  86                  list($min, $max) = explode(':', $answer->answer);
  87                  $minimum = (float) $min;
  88                  $maximum = (float) $max;
  89              } else {
  90                  // there's only one value
  91                  $minimum = (float) $answer->answer;
  92                  $maximum = $minimum;
  93              }
  94              if (($result->useranswer >= $minimum) && ($result->useranswer <= $maximum)) {
  95                  $result->newpageid = $answer->jumpto;
  96                  $result->response = trim($answer->response);
  97                  if ($this->lesson->jumpto_is_correct($this->properties->id, $result->newpageid)) {
  98                      $result->correctanswer = true;
  99                  }
 100                  if ($this->lesson->custom) {
 101                      if ($answer->score > 0) {
 102                          $result->correctanswer = true;
 103                      } else {
 104                          $result->correctanswer = false;
 105                      }
 106                  }
 107                  $result->answerid = $answer->id;
 108                  return $result;
 109              }
 110          }
 111          return $result;
 112      }
 113  
 114      public function display_answers(html_table $table) {
 115          $answers = $this->get_answers();
 116          $options = new stdClass;
 117          $options->noclean = true;
 118          $options->para = false;
 119          $i = 1;
 120          foreach ($answers as $answer) {
 121              $answer = parent::rewrite_answers_urls($answer, false);
 122              $cells = array();
 123              if ($this->lesson->custom && $answer->score > 0) {
 124                  // if the score is > 0, then it is correct
 125                  $cells[] = '<span class="labelcorrect">'.get_string("answer", "lesson")." $i</span>: \n";
 126              } else if ($this->lesson->custom) {
 127                  $cells[] = '<span class="label">'.get_string("answer", "lesson")." $i</span>: \n";
 128              } else if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
 129                  // underline correct answers
 130                  $cells[] = '<span class="correct">'.get_string("answer", "lesson")." $i</span>: \n";
 131              } else {
 132                  $cells[] = '<span class="labelcorrect">'.get_string("answer", "lesson")." $i</span>: \n";
 133              }
 134              $cells[] = format_text($answer->answer, $answer->answerformat, $options);
 135              $table->data[] = new html_table_row($cells);
 136  
 137              $cells = array();
 138              $cells[] = "<span class=\"label\">".get_string("response", "lesson")." $i</span>";
 139              $cells[] = format_text($answer->response, $answer->responseformat, $options);
 140              $table->data[] = new html_table_row($cells);
 141  
 142              $cells = array();
 143              $cells[] = "<span class=\"label\">".get_string("score", "lesson").'</span>';
 144              $cells[] = $answer->score;
 145              $table->data[] = new html_table_row($cells);
 146  
 147              $cells = array();
 148              $cells[] = "<span class=\"label\">".get_string("jump", "lesson").'</span>';
 149              $cells[] = $this->get_jump_name($answer->jumpto);
 150              $table->data[] = new html_table_row($cells);
 151              if ($i === 1){
 152                  $table->data[count($table->data)-1]->cells[0]->style = 'width:20%;';
 153              }
 154              $i++;
 155          }
 156          return $table;
 157      }
 158      public function stats(array &$pagestats, $tries) {
 159          if(count($tries) > $this->lesson->maxattempts) { // if there are more tries than the max that is allowed, grab the last "legal" attempt
 160              $temp = $tries[$this->lesson->maxattempts - 1];
 161          } else {
 162              // else, user attempted the question less than the max, so grab the last one
 163              $temp = end($tries);
 164          }
 165          if (isset($pagestats[$temp->pageid][$temp->useranswer])) {
 166              $pagestats[$temp->pageid][$temp->useranswer]++;
 167          } else {
 168              $pagestats[$temp->pageid][$temp->useranswer] = 1;
 169          }
 170          if (isset($pagestats[$temp->pageid]["total"])) {
 171              $pagestats[$temp->pageid]["total"]++;
 172          } else {
 173              $pagestats[$temp->pageid]["total"] = 1;
 174          }
 175          return true;
 176      }
 177  
 178      public function report_answers($answerpage, $answerdata, $useranswer, $pagestats, &$i, &$n) {
 179          $answers = $this->get_answers();
 180          $formattextdefoptions = new stdClass;
 181          $formattextdefoptions->para = false;  //I'll use it widely in this page
 182          foreach ($answers as $answer) {
 183              if ($useranswer == null && $i == 0) {
 184                  // I have the $i == 0 because it is easier to blast through it all at once.
 185                  if (isset($pagestats[$this->properties->id])) {
 186                      $stats = $pagestats[$this->properties->id];
 187                      $total = $stats["total"];
 188                      unset($stats["total"]);
 189                      foreach ($stats as $valentered => $ntimes) {
 190                          $data = '<input type="text" size="50" disabled="disabled" readonly="readonly" value="'.s($valentered).'" />';
 191                          $percent = $ntimes / $total * 100;
 192                          $percent = round($percent, 2);
 193                          $percent .= "% ".get_string("enteredthis", "lesson");
 194                          $answerdata->answers[] = array($data, $percent);
 195                      }
 196                  } else {
 197                      $answerdata->answers[] = array(get_string("nooneansweredthisquestion", "lesson"), " ");
 198                  }
 199                  $i++;
 200              } else if ($useranswer != null && ($answer->id == $useranswer->answerid || ($answer == end($answers) && empty($answerdata)))) {
 201                   // get in here when what the user entered is not one of the answers
 202                  $data = '<input type="text" size="50" disabled="disabled" readonly="readonly" value="'.s($useranswer->useranswer).'">';
 203                  if (isset($pagestats[$this->properties->id][$useranswer->useranswer])) {
 204                      $percent = $pagestats[$this->properties->id][$useranswer->useranswer] / $pagestats[$this->properties->id]["total"] * 100;
 205                      $percent = round($percent, 2);
 206                      $percent .= "% ".get_string("enteredthis", "lesson");
 207                  } else {
 208                      $percent = get_string("nooneenteredthis", "lesson");
 209                  }
 210                  $answerdata->answers[] = array($data, $percent);
 211  
 212                  if ($answer->id == $useranswer->answerid) {
 213                      if ($answer->response == null) {
 214                          if ($useranswer->correct) {
 215                              $answerdata->response = get_string("thatsthecorrectanswer", "lesson");
 216                          } else {
 217                              $answerdata->response = get_string("thatsthewronganswer", "lesson");
 218                          }
 219                      } else {
 220                          $answerdata->response = $answer->response;
 221                      }
 222                      if ($this->lesson->custom) {
 223                          $answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
 224                      } elseif ($useranswer->correct) {
 225                          $answerdata->score = get_string("receivedcredit", "lesson");
 226                      } else {
 227                          $answerdata->score = get_string("didnotreceivecredit", "lesson");
 228                      }
 229                  } else {
 230                      $answerdata->response = get_string("thatsthewronganswer", "lesson");
 231                      if ($this->lesson->custom) {
 232                          $answerdata->score = get_string("pointsearned", "lesson").": 0";
 233                      } else {
 234                          $answerdata->score = get_string("didnotreceivecredit", "lesson");
 235                      }
 236                  }
 237              }
 238              $answerpage->answerdata = $answerdata;
 239          }
 240          return $answerpage;
 241      }
 242  }
 243  
 244  class lesson_add_page_form_numerical extends lesson_add_page_form_base {
 245  
 246      public $qtype = 'numerical';
 247      public $qtypestring = 'numerical';
 248  
 249      public function custom_definition() {
 250          for ($i = 0; $i < $this->_customdata['lesson']->maxanswers; $i++) {
 251              $this->_form->addElement('header', 'answertitle'.$i, get_string('answer').' '.($i+1));
 252              $this->add_answer($i, null, ($i < 1));
 253              $this->add_response($i);
 254              $this->add_jumpto($i, null, ($i == 0 ? LESSON_NEXTPAGE : LESSON_THISPAGE));
 255              $this->add_score($i, null, ($i===0)?1:0);
 256          }
 257      }
 258  }
 259  
 260  class lesson_display_answer_form_numerical extends moodleform {
 261  
 262      public function definition() {
 263          global $USER, $OUTPUT;
 264          $mform = $this->_form;
 265          $contents = $this->_customdata['contents'];
 266  
 267          $mform->addElement('header', 'pageheader');
 268  
 269          $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
 270  
 271          $hasattempt = false;
 272          $attrs = array('size'=>'50', 'maxlength'=>'200');
 273          if (isset($this->_customdata['lessonid'])) {
 274              $lessonid = $this->_customdata['lessonid'];
 275              if (isset($USER->modattempts[$lessonid]->useranswer)) {
 276                  $attrs['readonly'] = 'readonly';
 277                  $hasattempt = true;
 278              }
 279          }
 280          $options = new stdClass;
 281          $options->para = false;
 282          $options->noclean = true;
 283  
 284          $mform->addElement('hidden', 'id');
 285          $mform->setType('id', PARAM_INT);
 286  
 287          $mform->addElement('hidden', 'pageid');
 288          $mform->setType('pageid', PARAM_INT);
 289  
 290          $mform->addElement('text', 'answer', get_string('youranswer', 'lesson'), $attrs);
 291          $mform->setType('answer', PARAM_FLOAT);
 292  
 293          if ($hasattempt) {
 294              $this->add_action_buttons(null, get_string("nextpage", "lesson"));
 295          } else {
 296              $this->add_action_buttons(null, get_string("submit", "lesson"));
 297          }
 298      }
 299  
 300  }