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   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   * The Gradebook setup page.
  19   *
  20   * @package   core_grades
  21   * @copyright 2008 Nicolas Connault
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once '../../../config.php';
  26  require_once $CFG->dirroot.'/grade/lib.php';
  27  require_once $CFG->dirroot.'/grade/report/lib.php'; // for preferences
  28  require_once $CFG->dirroot.'/grade/edit/tree/lib.php';
  29  
  30  $courseid        = required_param('id', PARAM_INT);
  31  $action          = optional_param('action', 0, PARAM_ALPHA);
  32  $eid             = optional_param('eid', 0, PARAM_ALPHANUM);
  33  $weightsadjusted = optional_param('weightsadjusted', 0, PARAM_INT);
  34  
  35  $url = new moodle_url('/grade/edit/tree/index.php', array('id' => $courseid));
  36  $PAGE->set_url($url);
  37  $PAGE->set_pagelayout('admin');
  38  
  39  /// Make sure they can even access this course
  40  if (!$course = $DB->get_record('course', array('id' => $courseid))) {
  41      print_error('nocourseid');
  42  }
  43  
  44  require_login($course);
  45  $context = context_course::instance($course->id);
  46  require_capability('moodle/grade:manage', $context);
  47  
  48  $PAGE->requires->js_call_amd('core_grades/edittree_index', 'enhance');
  49  
  50  /// return tracking object
  51  $gpr = new grade_plugin_return(array('type'=>'edit', 'plugin'=>'tree', 'courseid'=>$courseid));
  52  $returnurl = $gpr->get_return_url(null);
  53  
  54  // get the grading tree object
  55  // note: total must be first for moving to work correctly, if you want it last moving code must be rewritten!
  56  $gtree = new grade_tree($courseid, false, false);
  57  
  58  if (empty($eid)) {
  59      $element = null;
  60      $object  = null;
  61  
  62  } else {
  63      if (!$element = $gtree->locate_element($eid)) {
  64          print_error('invalidelementid', '', $returnurl);
  65      }
  66      $object = $element['object'];
  67  }
  68  
  69  $switch = grade_get_setting($course->id, 'aggregationposition', $CFG->grade_aggregationposition);
  70  
  71  $strgrades             = get_string('grades');
  72  $strgraderreport       = get_string('graderreport', 'grades');
  73  
  74  $moving = false;
  75  $movingeid = false;
  76  
  77  if ($action == 'moveselect') {
  78      if ($eid and confirm_sesskey()) {
  79          $movingeid = $eid;
  80          $moving=true;
  81      }
  82  }
  83  
  84  $grade_edit_tree = new grade_edit_tree($gtree, $movingeid, $gpr);
  85  
  86  switch ($action) {
  87      case 'delete':
  88          if ($eid && confirm_sesskey()) {
  89              if (!$grade_edit_tree->element_deletable($element)) {
  90                  // no deleting of external activities - they would be recreated anyway!
  91                  // exception is activity without grading or misconfigured activities
  92                  break;
  93              }
  94              $confirm = optional_param('confirm', 0, PARAM_BOOL);
  95  
  96              if ($confirm) {
  97                  $object->delete('grade/report/grader/category');
  98                  redirect($returnurl);
  99  
 100              } else {
 101                  $PAGE->set_title($strgrades . ': ' . $strgraderreport);
 102                  $PAGE->set_heading($course->fullname);
 103                  echo $OUTPUT->header();
 104                  $strdeletecheckfull = get_string('deletecheck', '', $object->get_name());
 105                  $optionsyes = array('eid'=>$eid, 'confirm'=>1, 'sesskey'=>sesskey(), 'id'=>$course->id, 'action'=>'delete');
 106                  $optionsno  = array('id'=>$course->id);
 107                  $formcontinue = new single_button(new moodle_url('index.php', $optionsyes), get_string('yes'));
 108                  $formcancel = new single_button(new moodle_url('index.php', $optionsno), get_string('no'), 'get');
 109                  echo $OUTPUT->confirm($strdeletecheckfull, $formcontinue, $formcancel);
 110                  echo $OUTPUT->footer();
 111                  die;
 112              }
 113          }
 114          break;
 115  
 116      case 'autosort':
 117          //TODO: implement autosorting based on order of mods on course page, categories first, manual items last
 118          break;
 119  
 120      case 'move':
 121          if ($eid and confirm_sesskey()) {
 122              $moveafter = required_param('moveafter', PARAM_ALPHANUM);
 123              $first = optional_param('first', false,  PARAM_BOOL); // If First is set to 1, it means the target is the first child of the category $moveafter
 124  
 125              if(!$after_el = $gtree->locate_element($moveafter)) {
 126                  print_error('invalidelementid', '', $returnurl);
 127              }
 128  
 129              $after = $after_el['object'];
 130              $sortorder = $after->get_sortorder();
 131  
 132              if (!$first) {
 133                  $parent = $after->get_parent_category();
 134                  $object->set_parent($parent->id);
 135              } else {
 136                  $object->set_parent($after->id);
 137              }
 138  
 139              $object->move_after_sortorder($sortorder);
 140  
 141              redirect($returnurl);
 142          }
 143          break;
 144  
 145      default:
 146          break;
 147  }
 148  
 149  //if we go straight to the db to update an element we need to recreate the tree as
 150  // $grade_edit_tree has already been constructed.
 151  //Ideally we could do the updates through $grade_edit_tree to avoid recreating it
 152  $recreatetree = false;
 153  
 154  if ($data = data_submitted() and confirm_sesskey()) {
 155      // Perform bulk actions first
 156      if (!empty($data->bulkmove)) {
 157          $elements = array();
 158  
 159          foreach ($data as $key => $value) {
 160              if (preg_match('/select_(ig[0-9]*)/', $key, $matches)) {
 161                  $elements[] = $matches[1];
 162              }
 163          }
 164  
 165          $grade_edit_tree->move_elements($elements, $returnurl);
 166      }
 167  
 168      // Update weights (extra credits) on categories and items.
 169      foreach ($data as $key => $value) {
 170          if (preg_match('/^weight_([0-9]+)$/', $key, $matches)) {
 171              $aid   = $matches[1];
 172  
 173              $value = unformat_float($value);
 174              $value = clean_param($value, PARAM_FLOAT);
 175  
 176              $grade_item = grade_item::fetch(array('id' => $aid, 'courseid' => $courseid));
 177  
 178              // Convert weight to aggregation coef2.
 179              $aggcoef = $grade_item->get_coefstring();
 180              if ($aggcoef == 'aggregationcoefextraweightsum') {
 181                  // The field 'weight' should only be sent when the checkbox 'weighoverride' is checked,
 182                  // so there is not need to set weightoverride here, it is done below.
 183                  $value = $value / 100.0;
 184                  $grade_item->aggregationcoef2 = $value;
 185              } else if ($aggcoef == 'aggregationcoefweight' || $aggcoef == 'aggregationcoefextraweight') {
 186                  $grade_item->aggregationcoef = $value;
 187              }
 188  
 189              $grade_item->update();
 190  
 191              $recreatetree = true;
 192  
 193          // Grade item checkbox inputs.
 194          } elseif (preg_match('/^(weightoverride)_([0-9]+)$/', $key, $matches)) {
 195              $param   = $matches[1];
 196              $aid     = $matches[2];
 197              $value   = clean_param($value, PARAM_BOOL);
 198  
 199              $grade_item = grade_item::fetch(array('id' => $aid, 'courseid' => $courseid));
 200              $grade_item->$param = $value;
 201  
 202              $grade_item->update();
 203  
 204              $recreatetree = true;
 205          }
 206      }
 207  }
 208  
 209  $originalweights = grade_helper::fetch_all_natural_weights_for_course($courseid);
 210  
 211  /**
 212   * Callback function to adjust the URL if weights changed after the
 213   * regrade.
 214   *
 215   * @param int $courseid The course ID
 216   * @param array $originalweights The weights before the regrade
 217   * @param int $weightsadjusted Whether weights have been adjusted
 218   * @return moodle_url A URL to redirect to after regrading when a progress bar is displayed.
 219   */
 220  $grade_edit_tree_index_checkweights = function() use ($courseid, $originalweights, &$weightsadjusted) {
 221      global $PAGE;
 222  
 223      $alteredweights = grade_helper::fetch_all_natural_weights_for_course($courseid);
 224      if (array_diff($originalweights, $alteredweights)) {
 225          $weightsadjusted = 1;
 226          return new moodle_url($PAGE->url, array('weightsadjusted' => $weightsadjusted));
 227      }
 228      return $PAGE->url;
 229  };
 230  
 231  if (grade_regrade_final_grades_if_required($course, $grade_edit_tree_index_checkweights)) {
 232      $recreatetree = true;
 233  }
 234  
 235  print_grade_page_head($courseid, 'settings', 'setup', get_string('gradebooksetup', 'grades'));
 236  
 237  // Print Table of categories and items
 238  echo $OUTPUT->box_start('gradetreebox generalbox');
 239  
 240  echo '<form id="gradetreeform" method="post" action="'.$returnurl.'">';
 241  echo '<div>';
 242  echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
 243  
 244  //did we update something in the db and thus invalidate $grade_edit_tree?
 245  if ($recreatetree) {
 246      $grade_edit_tree = new grade_edit_tree($gtree, $movingeid, $gpr);
 247  }
 248  
 249  // Check to see if we have a normalisation message to send.
 250  if ($weightsadjusted) {
 251      echo $OUTPUT->notification(get_string('weightsadjusted', 'grades'), 'notifymessage');
 252  }
 253  
 254  echo html_writer::table($grade_edit_tree->table);
 255  
 256  echo '<div id="gradetreesubmit">';
 257  if (!$moving) {
 258      echo '<input class="advanced" type="submit" value="'.get_string('savechanges').'" />';
 259  }
 260  
 261  // We don't print a bulk move menu if there are no other categories than course category
 262  if (!$moving && count($grade_edit_tree->categories) > 1) {
 263      echo '<br /><br />';
 264      echo '<input type="hidden" name="bulkmove" value="0" id="bulkmoveinput" />';
 265      $attributes = array('id'=>'menumoveafter', 'class' => 'ignoredirty singleselect');
 266      echo html_writer::label(get_string('moveselectedto', 'grades'), 'menumoveafter');
 267      echo html_writer::select($grade_edit_tree->categories, 'moveafter', '', array(''=>'choosedots'), $attributes);
 268      echo '<div id="noscriptgradetreeform" class="hiddenifjs">
 269              <input type="submit" value="'.get_string('go').'" />
 270            </div>';
 271  }
 272  
 273  echo '</div>';
 274  
 275  echo '</div></form>';
 276  
 277  echo $OUTPUT->box_end();
 278  
 279  // Print action buttons
 280  echo $OUTPUT->container_start('buttons mdl-align');
 281  
 282  if ($moving) {
 283      echo $OUTPUT->single_button(new moodle_url('index.php', array('id'=>$course->id)), get_string('cancel'), 'get');
 284  } else {
 285      echo $OUTPUT->single_button(new moodle_url('category.php', array('courseid'=>$course->id)), get_string('addcategory', 'grades'), 'get');
 286      echo $OUTPUT->single_button(new moodle_url('item.php', array('courseid'=>$course->id)), get_string('additem', 'grades'), 'get');
 287  
 288      if (!empty($CFG->enableoutcomes)) {
 289          echo $OUTPUT->single_button(new moodle_url('outcomeitem.php', array('courseid'=>$course->id)), get_string('addoutcomeitem', 'grades'), 'get');
 290      }
 291  
 292      //echo $OUTPUT->(new moodle_url('index.php', array('id'=>$course->id, 'action'=>'autosort')), get_string('autosort', 'grades'), 'get');
 293  }
 294  
 295  echo $OUTPUT->container_end();
 296  
 297  $PAGE->requires->yui_module('moodle-core-formchangechecker',
 298      'M.core_formchangechecker.init',
 299      array(array(
 300          'formid' => 'gradetreeform'
 301      ))
 302  );
 303  $PAGE->requires->string_for_js('changesmadereallygoaway', 'moodle');
 304  
 305  echo $OUTPUT->footer();
 306  die;
 307  
 308