course/delete_category_form.php

   1 <?php  //$Id$
   2
   3 require_once($CFG->libdir.'/formslib.php');
   4
   5 class delete_category_form extends moodleform {
   6
   7     var $_category;
   8
   9     function definition() {
  10         global $CFG;
  11
  12         $mform    =& $this->_form;
  13         $category = $this->_customdata;
  14         ensure_context_subobj_present($category, CONTEXT_COURSECAT);
  15         $this->_category = $category;
  16
  17         $mform->addElement('header','general', get_string('categorycurrentcontents', '', format_string($category->name)));
  18
  19         $displaylist = array();
  20         $notused = array();
  21         make_categories_list($displaylist, $notused, 'moodle/course:create', $category->id);
  22
  23         // Check permissions, to see if it OK to give the option to delete
  24         // the contents, rather than move elsewhere.
  25         $candeletecontent = true;
  26         $tocheck = array($category);
  27         while (!empty($tocheck)) {
  28             $checkcat = array_pop($tocheck);
  29             $tocheck = $tocheck + get_child_categories($checkcat->id);
  30             if (!has_capability('moodle/category:manage', $checkcat->context)) {
  31                 $candeletecontent = false;
  32                 break;
  33             }
  34         }
  35
  36         // TODO check that the user is allowed to delete all the courses MDL-17502!
  37
  38         $options = array();
  39
  40         if ($displaylist) {
  41             $options[0] = get_string('move');
  42         }
  43
  44         if ($candeletecontent) {
  45             $options[1] = get_string('delete');
  46         }
  47
  48         if (empty($options)) {
  49             print_error('nocategorydelete', 'error', 'index.php', format_string($category->name));
  50         }
  51
  52         $mform->addElement('select', 'fulldelete', get_string('categorycontents'), $options);
  53         $mform->disabledIf('newparent', 'fulldelete', 'eq', '1');
  54         $mform->setDefault('newparent', 0);
  55
  56         if ($displaylist) {
  57             $mform->addElement('select', 'newparent', get_string('movecategorycontentto'), $displaylist);
  58             if (in_array($category->parent, $displaylist)) {
  59                 $mform->setDefault('newparent', $category->parent);
  60             }
  61         }
  62
  63         $mform->addElement('hidden', 'delete');
  64         $mform->addElement('hidden', 'sure');
  65         $mform->setDefault('sure', md5(serialize($category)));
  66
  67 //--------------------------------------------------------------------------------
  68         $this->add_action_buttons(true, get_string('delete'));
  69
  70     }
  71
  72 /// perform some extra moodle validation
  73     function validation($data, $files) {
  74         $errors = parent::validation($data, $files);
  75
  76         if (!empty($data['fulldelete'])) {
  77             // already verified
  78         } else {
  79             if (empty($data['newparent'])) {
  80                 $errors['newparent'] = get_string('required');
  81             }
  82         }
  83
  84         if ($data['sure'] != md5(serialize($this->_category))) {
  85             $errors['categorylabel'] = get_string('categorymodifiedcancel');
  86         }
  87
  88         return $errors;
  89     }
  90 }
  91 ?>