['action'] === 'ajax-tag-search' )
		       || ( isset( $_POST['action'] ) && in_array( $_POST['action'],
				array( 'get-tagcloud', 'wp-link-ajax' ), true ) );
	}

	/**
	 * Adjusts the output of the filtering for the current language in case
	 * the request is for a preview page.
	 *
	 * @return null|string
	 */
	private function filter_preview_language_code() {
		$preview_id   = filter_var(
			isset( $_GET['preview_id'] ) ? $_GET['preview_id'] : '',
			FILTER_SANITIZE_NUMBER_INT );
		$preview_flag = filter_input( INPUT_GET, 'preview' ) || $preview_id;
		$preview_id   = $preview_id ? $preview_id : filter_input( INPUT_GET, 'p' );
		$preview_id   = $preview_id ? $preview_id : filter_input( INPUT_GET, 'page_id' );
		$lang         = null;

		if ( $preview_flag && $preview_id ) {
			global $wpml_post_translations;
			$lang = $wpml_post_translations->get_element_lang_code( $preview_id );
		}

		return $lang;
	}
}