_backward_compatibility() ) {

			if ( $slot->is_sidebar() || $slot->is_shortcode_actions() ) {

				if ( $this->is_legacy_template( $slot->template(), 'list-vertical' )
					 || $this->is_legacy_template( $slot->template(), 'list-horizontal' )
				) {
					$vars['backward_compatibility']['css_id'] = 'lang_sel_list';

					if ( $this->is_legacy_template( $slot->template(), 'list-horizontal' ) ) {
						$vars['css_classes'] = 'lang_sel_list_horizontal ' . $vars['css_classes'];
					} else {
						$vars['css_classes'] = 'lang_sel_list_vertical ' . $vars['css_classes'];
					}
				}

				if ( $this->is_legacy_template( $slot->template(), 'dropdown' ) ) {
					$vars['backward_compatibility']['css_id'] = 'lang_sel';
				}

				if ( $this->is_legacy_template( $slot->template(), 'dropdown-click' ) ) {
					$vars['backward_compatibility']['css_id'] = 'lang_sel_click';
				}
			}

			if ( $slot->is_post_translations() ) {
				$vars['css_classes'] = 'icl_post_in_other_langs ' . $vars['css_classes'];
			}

			if ( $slot->is_footer() ) {
				$vars['backward_compatibility']['css_id'] = 'lang_sel_footer';
			}

			$vars['backward_compatibility']['css_classes_flag']    = 'iclflag';
			$vars['backward_compatibility']['css_classes_native']  = 'icl_lang_sel_native';
			$vars['backward_compatibility']['css_classes_display'] = 'icl_lang_sel_translated';
			$vars['backward_compatibility']['css_classes_bracket'] = 'icl_lang_sel_bracket';
		}

		return $vars;
	}

	/**
	 * @param string      $template_slug
	 * @param string|null $type
	 *
	 * @return bool
	 */
	private function is_legacy_template( $template_slug, $type = null ) {
		$templates = $this->settings->get_core_templates();
		$ret       = in_array( $template_slug, $templates, true );

		if ( $ret && array_key_exists( $type, $templates ) ) {
			$ret = $templates[ $type ] === $template_slug;
		}

		return $ret;
	}
}