Html::jsSetDropdownValue PHP Method

    static function jsSetDropdownValue($id, $value)
    {
        return self::jsGetElementbyID($id) . ".val('{$value}').trigger('change');";
    }

 /**
  * Make a select box for all items
  *
  * @since version 0.85
  *
  * @param $options array:
  *   - itemtype_name        : the name of the field containing the itemtype (default 'itemtype')
  *   - items_id_name        : the name of the field containing the id of the selected item
  *                            (default 'items_id')
  *   - itemtypes            : all possible types to search for (default: $CFG_GLPI["state_types"])
  *   - default_itemtype     : the default itemtype to select (don't define if you don't
  *                            need a default) (defaut 0)
  *    - entity_restrict     : restrict entity in searching items (default -1)
  *    - onlyglobal          : don't match item that don't have `is_global` == 1 (false by default)
  *    - checkright          : check to see if we can "view" the itemtype (false by default)
  *    - showItemSpecificity : given an item, the AJAX file to open if there is special
  *                            treatment. For instance, select a Item_Device* for CommonDevice
  *    - emptylabel          : Empty choice's label (default self::EMPTY_VALUE)
  *    - used                : array / Already used items ID: not to display in dropdown (default empty)
  *
  * @return randomized value used to generate HTML IDs
  **/
 static function showSelectItemFromItemtypes(array $options = array())
 {
     global $CFG_GLPI;
     $params = array();
     $params['itemtype_name'] = 'itemtype';
     $params['items_id_name'] = 'items_id';
     $params['itemtypes'] = '';
     $params['default_itemtype'] = 0;
     $params['entity_restrict'] = -1;
     $params['onlyglobal'] = false;
     $params['checkright'] = false;
     $params['showItemSpecificity'] = '';
     $params['emptylabel'] = self::EMPTY_VALUE;
     $params['used'] = array();
     if (is_array($options) && count($options)) {
         foreach ($options as $key => $val) {
             $params[$key] = $val;
         }
     }
     $rand = self::showItemType($params['itemtypes'], array('checkright' => $params['checkright'], 'name' => $params['itemtype_name'], 'emptylabel' => $params['emptylabel']));
     if ($rand) {
         $p = array('idtable' => '__VALUE__', 'name' => $params['items_id_name'], 'entity_restrict' => $params['entity_restrict'], 'showItemSpecificity' => $params['showItemSpecificity']);
         // manage condition
         if ($params['onlyglobal']) {
             $p['condition'] = static::addNewCondition("`is_global` = 1");
         }
         if ($params['used']) {
             $p['used'] = $params['used'];
         }
         $field_id = Html::cleanId("dropdown_" . $params['itemtype_name'] . $rand);
         $show_id = Html::cleanId("show_" . $params['items_id_name'] . $rand);
         Ajax::updateItemOnSelectEvent($field_id, $show_id, $CFG_GLPI["root_doc"] . "/ajax/dropdownAllItems.php", $p);
         echo "<br><span id='{$show_id}'>&nbsp;</span>\n";
         // We check $options as the caller will set $options['default_itemtype'] only if it needs a
         // default itemtype and the default value can be '' thus empty won't be valid !
         if (array_key_exists('default_itemtype', $options)) {
             echo "<script type='text/javascript' >\n";
             echo Html::jsSetDropdownValue($field_id, $params['default_itemtype']);
             echo "</script>\n";
             $p["idtable"] = $params['default_itemtype'];
             Ajax::updateItem($show_id, $CFG_GLPI["root_doc"] . "/ajax/dropdownAllItems.php", $p);
         }
     }
     return $rand;
 }