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   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   * This file defines an mform to edit rubric grading strategy forms.
  20   *
  21   * @package    workshopform_rubric
  22   * @copyright  2009 David Mudrak <david.mudrak@gmail.com>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once (__DIR__ . '/../edit_form.php');    // parent class definition
  29  
  30  /**
  31   * Class for editing rubric grading strategy forms.
  32   *
  33   * @uses moodleform
  34   */
  35  class workshop_edit_rubric_strategy_form extends workshop_edit_strategy_form {
  36  
  37      const MINLEVELS = 4;
  38      const ADDLEVELS = 2;
  39  
  40      /**
  41       * Define the elements to be displayed at the form
  42       *
  43       * Called by the parent::definition()
  44       *
  45       * @return void
  46       */
  47      protected function definition_inner(&$mform) {
  48  
  49          $norepeats          = $this->_customdata['norepeats'];          // number of dimensions to display
  50          $descriptionopts    = $this->_customdata['descriptionopts'];    // wysiwyg fields options
  51          $current            = $this->_customdata['current'];            // current data to be set
  52  
  53          $mform->addElement('hidden', 'norepeats', $norepeats);
  54          $mform->setType('norepeats', PARAM_INT);
  55          // value not to be overridden by submitted value
  56          $mform->setConstants(array('norepeats' => $norepeats));
  57  
  58          $levelgrades = array();
  59          for ($i = 100; $i >= 0; $i--) {
  60              $levelgrades[$i] = $i;
  61          }
  62  
  63          for ($i = 0; $i < $norepeats; $i++) {
  64              $mform->addElement('header', 'dimension'.$i, get_string('dimensionnumber', 'workshopform_rubric', $i+1));
  65              $mform->addElement('hidden', 'dimensionid__idx_'.$i);
  66              $mform->setType('dimensionid__idx_'.$i, PARAM_INT);
  67              $mform->addElement('editor', 'description__idx_'.$i.'_editor',
  68                                  get_string('dimensiondescription', 'workshopform_rubric'), '', $descriptionopts);
  69              if (isset($current->{'numoflevels__idx_' . $i})) {
  70                  $numoflevels = max($current->{'numoflevels__idx_' . $i} + self::ADDLEVELS, self::MINLEVELS);
  71              } else {
  72                  $numoflevels = self::MINLEVELS;
  73              }
  74              $prevlevel = -1;
  75              for ($j = 0; $j < $numoflevels; $j++) {
  76                  $mform->addElement('hidden', 'levelid__idx_' . $i . '__idy_' . $j);
  77                  $mform->setType('levelid__idx_' . $i . '__idy_' . $j, PARAM_INT);
  78                  $levelgrp = array();
  79                  $levelgrp[] = $mform->createElement('select', 'grade__idx_'.$i.'__idy_'.$j,'', $levelgrades);
  80                  $levelgrp[] = $mform->createElement('textarea', 'definition__idx_'.$i.'__idy_'.$j, '',  array('cols' => 60, 'rows' => 3));
  81                  $mform->addGroup($levelgrp, 'level__idx_'.$i.'__idy_'.$j, get_string('levelgroup', 'workshopform_rubric'), array(' '), false);
  82                  $mform->setDefault('grade__idx_'.$i.'__idy_'.$j, $prevlevel + 1);
  83                  if (isset($current->{'grade__idx_'.$i.'__idy_'.$j})) {
  84                      $prevlevel = $current->{'grade__idx_'.$i.'__idy_'.$j};
  85                  } else {
  86                      $prevlevel++;
  87                  }
  88              }
  89          }
  90  
  91          $mform->registerNoSubmitButton('adddims');
  92          $mform->addElement('submit', 'adddims', get_string('addmoredimensions', 'workshopform_rubric',
  93                  workshop_rubric_strategy::ADDDIMS));
  94          $mform->closeHeaderBefore('adddims');
  95  
  96          $mform->addElement('header', 'configheader', get_string('configuration', 'workshopform_rubric'));
  97          $layoutgrp = array();
  98          $layoutgrp[] = $mform->createElement('radio', 'config_layout', '',
  99                  get_string('layoutlist', 'workshopform_rubric'), 'list');
 100          $layoutgrp[] = $mform->createElement('radio', 'config_layout', '',
 101                  get_string('layoutgrid', 'workshopform_rubric'), 'grid');
 102          $mform->addGroup($layoutgrp, 'layoutgrp', get_string('layout', 'workshopform_rubric'), array('<br />'), false);
 103          $mform->setDefault('config_layout', 'list');
 104          $this->set_data($current);
 105      }
 106  
 107      /**
 108       * Provide validation rules for the rubric editor form.
 109       *
 110       * @param array $data
 111       * @param array $files
 112       * @return array
 113       */
 114      protected function validation_inner($data, $files) {
 115  
 116          $errors = array();
 117  
 118          // Iterate over all submitted dimensions (criteria).
 119          for ($i = 0; isset($data['dimensionid__idx_'.$i]); $i++) {
 120  
 121              $dimgrades = array();
 122  
 123              if (0 == strlen(trim($data['description__idx_'.$i.'_editor']['text']))) {
 124                  // The description text is empty and this criterion will be deleted.
 125                  continue;
 126              }
 127  
 128              // Make sure the levels grades are unique within the criterion.
 129              $atleastonelevel = false;
 130              for ($j = 0; isset($data['levelid__idx_'.$i.'__idy_'.$j]); $j++) {
 131                  if (0 == strlen(trim($data['definition__idx_'.$i.'__idy_'.$j]))) {
 132                      // The level definition is empty and will not be saved.
 133                      continue;
 134                  }
 135                  $atleastonelevel = true;
 136  
 137                  $levelgrade = $data['grade__idx_'.$i.'__idy_'.$j];
 138  
 139                  if (isset($dimgrades[$levelgrade])) {
 140                      // This grade has already been set for another level.
 141                      $k = $dimgrades[$levelgrade];
 142                      $errors['level__idx_'.$i.'__idy_'.$j] = $errors['level__idx_'.$i.'__idy_'.$k] = get_string('mustbeunique',
 143                          'workshopform_rubric');
 144                  } else {
 145                      $dimgrades[$levelgrade] = $j;
 146                  }
 147              }
 148              if (!$atleastonelevel) {
 149                  $errors['level__idx_'.$i.'__idy_0'] = get_string('mustdefinelevel', 'workshopform_rubric');
 150              }
 151          }
 152  
 153          return $errors;
 154      }
 155  }