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         $this->_category = $category;
  15
  16         $mform->addElement('header','general', get_string('categorycurrentcontents', '', format_string($category->name)));
  17
  18         $displaylist = array();
  19         $parentlist = array();
  20         $children = array();
  21         make_categories_list($displaylist, $parentlist);
  22         unset($displaylist[$category->id]);
  23         foreach ($displaylist as $catid=>$unused) {
  24             // remove all children of $category
  25             if (isset($parentlist[$catid]) and in_array($category->id, $parentlist[$catid])) {
  26                 $children[] = $catid;
  27                 unset($displaylist[$catid]);
  28                 continue;
  29             }
  30             if (!has_capability('moodle/course:create', get_context_instance(CONTEXT_COURSECAT, $catid))) {
  31                 unset($displaylist[$catid]);
  32             }
  33         }
  34
  35         $candeletecontent = true;
  36         foreach ($children as $catid) {
  37             $context = get_context_instance(CONTEXT_COURSECAT, $catid);
  38             if (!has_capability('moodle/category:delete', $context)) {
  39                 $candeletecontent = false;
  40                 break;
  41             }
  42         }
  43
  44         $options = array();
  45
  46         if ($displaylist) {
  47             $options[0] = get_string('move');
  48         }
  49
  50         if ($candeletecontent) {
  51             $options[1] =get_string('delete');
  52         }
  53
  54         if (empty($options)) {
  55             print_error('nocategorydelete', 'error', 'index.php', format_string($category->name));
  56         }
  57
  58         $mform->addElement('select', 'fulldelete', get_string('categorycontents'), $options);
  59         $mform->disabledIf('newparent', 'fulldelete', 'eq', '1');
  60         $mform->setDefault('newparent', 0);
  61
  62         if ($displaylist) {
  63             $mform->addElement('select', 'newparent', get_string('movecategorycontentto'), $displaylist);
  64             if (in_array($category->parent, $displaylist)) {
  65                 $mform->setDefault('newparent', $category->parent);
  66             }
  67         }
  68
  69         $mform->addElement('hidden', 'delete');
  70         $mform->addElement('hidden', 'sure');
  71         $mform->setDefault('sure', md5(serialize($category)));
  72
  73 //--------------------------------------------------------------------------------
  74         $this->add_action_buttons(true, get_string('delete'));
  75
  76     }
  77
  78 /// perform some extra moodle validation
  79     function validation($data, $files) {
  80         $errors = parent::validation($data, $files);
  81
  82         if (!empty($data['fulldelete'])) {
  83             // already verified
  84         } else {
  85             if (empty($data['newparent'])) {
  86                 $errors['newparent'] = get_string('required');
  87             }
  88         }
  89
  90         if ($data['sure'] != md5(serialize($this->_category))) {
  91             $errors['categorylabel'] = get_string('categorymodifiedcancel');
  92         }
  93
  94         return $errors;
  95     }
  96 }
  97 ?>