Craft\AmForms_FieldsService::getProperFieldTypes PHP Method

    public function getProperFieldTypes($fieldTypes)
    {
        $basicFields = array();
        $advancedFields = array();
        $fieldTypeGroups = array();
        // Supported fields for displayForm functionality
        $supported = $this->getSupportedFieldTypes();
        // Set allowed fields
        foreach ($fieldTypes as $key => $fieldType) {
            if (in_array($key, $supported)) {
                $basicFields[$key] = $fieldType;
            } else {
                $advancedFields[$key] = $fieldType;
            }
        }
        $fieldTypeGroups['basic'] = array('optgroup' => Craft::t('Basic fields'));
        foreach ($basicFields as $key => $fieldType) {
            $fieldTypeGroups[$key] = $fieldType;
        }
        if (craft()->userSession->isAdmin()) {
            $fieldTypeGroups['advanced'] = array('optgroup' => Craft::t('Advanced fields'));
            foreach ($advancedFields as $key => $fieldType) {
                $fieldTypeGroups[$key] = $fieldType;
            }
        }
        return $fieldTypeGroups;
    }