get_comments_pagination_arrow

WordPress Version: 6.1

/**
 * Helper function that returns the proper pagination arrow HTML for
 * `CommentsPaginationNext` and `CommentsPaginationPrevious` blocks based on the
 * provided `paginationArrow` from `CommentsPagination` context.
 *
 * It's used in CommentsPaginationNext and CommentsPaginationPrevious blocks.
 *
 * @since 6.0.0
 *
 * @param WP_Block $block           Block instance.
 * @param string   $pagination_type Optional. Type of the arrow we will be rendering.
 *                                  Accepts 'next' or 'previous'. Default 'next'.
 * @return string|null The pagination arrow HTML or null if there is none.
 */
function get_comments_pagination_arrow($block, $pagination_type = 'next')
{
    $arrow_map = array('none' => '', 'arrow' => array('next' => '→', 'previous' => '←'), 'chevron' => array('next' => '»', 'previous' => '«'));
    if (!empty($block->context['comments/paginationArrow']) && !empty($arrow_map[$block->context['comments/paginationArrow']][$pagination_type])) {
        $arrow_attribute = $block->context['comments/paginationArrow'];
        $arrow = $arrow_map[$block->context['comments/paginationArrow']][$pagination_type];
        $arrow_classes = "wp-block-comments-pagination-{$pagination_type}-arrow is-arrow-{$arrow_attribute}";
        return "<span class='{$arrow_classes}' aria-hidden='true'>{$arrow}</span>";
    }
    return null;
}