render_block_core_page_list( array $attributes, string $content, WP_Block $block ): string

257function render_block_core_page_list( $attributes, $content, $block ) {258	static $block_id = 0;259	++$block_id;260 261	$parent_page_id = $attributes['parentPageID'];262	$is_nested      = ! empty( $block->context['core/isInsideSubmenu'] );263 264	$all_pages = get_pages(265		array(266			'sort_column' => 'menu_order,post_title',267			'order'       => 'asc',268		)269	);270 271	// If there are no pages, there is nothing to show.272	if ( empty( $all_pages ) ) {273		return;274	}275 276	$top_level_pages = array();277 278	$pages_with_children = array();279 280	$active_page_ancestor_ids = array();281 282	foreach ( (array) $all_pages as $page ) {283		$is_active = ! empty( $page->ID ) && ( get_queried_object_id() === $page->ID );284 285		if ( $is_active ) {286			$active_page_ancestor_ids = get_post_ancestors( $page->ID );287		}288 289		if ( $page->post_parent ) {290			$pages_with_children[ $page->post_parent ][ $page->ID ] = array(291				'page_id'   => $page->ID,292				'title'     => $page->post_title,293				'link'      => get_permalink( $page ),294				'is_active' => $is_active,295			);296		} else {297			$top_level_pages[ $page->ID ] = array(298				'page_id'   => $page->ID,299				'title'     => $page->post_title,300				'link'      => get_permalink( $page ),301				'is_active' => $is_active,302			);303 304		}305	}306 307	$colors  = block_core_page_list_build_css_colors( $attributes, $block->context );308	$classes = array_merge(309		$colors['css_classes']310	);311 312	$style_attribute = $colors['inline_styles'];313	$css_classes     = trim( implode( ' ', $classes ) );314 315	$nested_pages = block_core_page_list_nest_pages( $top_level_pages, $pages_with_children );316 317	if ( 0 !== $parent_page_id ) {318		// If the parent page has no child pages, there is nothing to show.319		if ( ! array_key_exists( $parent_page_id, $pages_with_children ) ) {320			return;321		}322 323		$nested_pages = block_core_page_list_nest_pages(324			$pages_with_children[ $parent_page_id ],325			$pages_with_children326		);327	}328 329	$is_navigation_child = array_key_exists( 'showSubmenuIcon', $block->context );330 331	// Get submenu visibility with backward compatibility for openSubmenusOnClick.332	$submenu_visibility = $is_navigation_child ? block_core_page_list_get_submenu_visibility( $block->context ) : 'hover';333 334	$show_submenu_icons = array_key_exists( 'showSubmenuIcon', $block->context ) ? $block->context['showSubmenuIcon'] : false;335 336	$wrapper_markup = $is_nested ? '%2$s' : '<ul %1$s>%2$s</ul>';