rtForm::container_enclosed_elements PHP Method

        private function container_enclosed_elements($element, $attrib, $rtForm_options)
        {
            $html = $id = '';
            $size = count($rtForm_options);
            if (isset($attrib['id'])) {
                $id = $attrib['id'];
            }
            foreach ($rtForm_options as $opt) {
                if (isset($attrib['id']) && $size > 1) {
                    $attrib['id'] = $id . '-' . $this->get_default_id($element);
                    $this->update_default_id($element);
                }
                foreach ((array) $opt as $key => $val) {
                    if ('checked' === $key) {
                        $attrib['checked'] = esc_attr($val);
                    } else {
                        if ('selected' === $key) {
                            $attrib['selected'] = esc_attr($val);
                        } else {
                            if ('desc' === $key) {
                                $attrib['desc'] = esc_attr($val);
                            } else {
                                if ('id' === $key) {
                                    $attrib['id'] = esc_attr($val);
                                } else {
                                    $attrib['key'] = $key;
                                    $attrib['value'] = esc_attr($val);
                                }
                            }
                        }
                    }
                }
                $checked = isset($attrib['checked']) && $attrib['checked'] ? 'checked=checked' : '';
                if (isset($attrib['switch']) && $attrib['switch']) {
                    $switch = 'data-toggle="switch"';
                } else {
                    $switch = '';
                }
                $data = '';
                switch ($element) {
                    case 'rtRadio':
                        $data = '<input type="radio" ' . $checked . ' ';
                        break;
                    case 'rtCheckbox':
                        $data = '<input type="checkbox" ' . $checked . ' ' . $switch . ' ';
                        break;
                    case 'rtSelect':
                        $selected = $attrib['selected'] ? 'selected=selected' : '';
                        $data = '<option value="' . esc_attr($attrib['value']) . '" ' . $selected . '>' . esc_html($attrib['key']) . '</option>';
                        break;
                }
                if ('rtSelect' !== $element) {
                    $data .= $this->processAttributes($element, $attrib, true);
                    // span elements for checkbox on/off switch
                    if ('rtCheckbox' === $element) {
                        $data .= '<span class="switch-label" data-on="On" data-off="Off"></span><span class="switch-handle"></span>';
                    }
                    if (isset($attrib['switch_square']) && $attrib['switch_square']) {
                        $data = '<div class="rt-switch switch-square" data-on-label="<i class=\'fui-check\'></i>" data-off-label="<i class=\'fui-cross\'></i>">' . $data . '</div>';
                    } else {
                        if (isset($attrib['switch']) && $attrib['switch'] || isset($attrib['switch_square']) && $attrib['switch_square']) {
                            $label_class = array('switch');
                            $data = $this->enclose_label($element, $data, $attrib['key'], $label_class);
                            if ($size > 1) {
                                $data = '<div>' . $data . '</div>';
                            }
                        } else {
                            $data = $this->enclose_label($element, $data, $attrib['key']);
                        }
                    }
                    $data .= '';
                }
                $html .= $data;
                unset($attrib['id']);
                unset($attrib['key']);
                unset($attrib['value']);
            }
            return $html;
        }