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Name	Size	Permission	Date
ID3	[ DIR ]	drwxr-xr-x	2026-09-02 14:27
IXR	[ DIR ]	drwxr-xr-x	2026-09-02 21:15
PHPMailer	[ DIR ]	drwxr-xr-x	2026-09-02 12:24
Requests	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
SimplePie	[ DIR ]	drwxr-xr-x	2026-09-01 05:44
Text	[ DIR ]	drwxr-xr-x	2026-09-02 11:14
abilities-api	[ DIR ]	drwxr-xr-x	2026-09-02 10:29
ai-client	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
block-patterns	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
block-supports	[ DIR ]	drwxr-xr-x	2026-09-01 16:34
blocks	[ DIR ]	drwxr-xr-x	2026-09-02 22:23
build	[ DIR ]	drwxr-xr-x	2026-09-01 05:55
certificates	[ DIR ]	drwxr-xr-x	2026-09-02 10:37
css	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
customize	[ DIR ]	drwxr-xr-x	2026-09-01 22:00
fonts	[ DIR ]	drwxr-xr-x	2026-09-02 09:49
html-api	[ DIR ]	drwxr-xr-x	2026-09-02 11:18
images	[ DIR ]	drwxr-xr-x	2026-09-02 10:42
interactivity-api	[ DIR ]	drwxr-xr-x	2026-09-02 13:48
js	[ DIR ]	drwxr-xr-x	2026-09-02 12:23
l10n	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
php-ai-client	[ DIR ]	drwxr-xr-x	2026-09-01 06:11
php-compat	[ DIR ]	drwxr-xr-x	2026-09-02 09:35
pomo	[ DIR ]	drwxr-xr-x	2026-09-01 13:37
rest-api	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
sitemaps	[ DIR ]	drwxr-xr-x	2026-09-02 12:28
sodium_compat	[ DIR ]	drwxr-xr-x	2026-09-02 10:46
style-engine	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
theme-compat	[ DIR ]	drwxr-xr-x	2026-09-02 10:32
widgets	[ DIR ]	drwxr-xr-x	2026-09-02 19:06
bookmark-template.php	12.47 KB	-rw-r--r--	2025-04-16 03:32
class-walker-category.php	8.28 KB	-rw-r--r--	2023-09-08 09:32
class-wp-block-bindings-registry.php	8.07 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-list.php	4.6 KB	-rw-r--r--	2026-02-08 03:19
class-wp-block-metadata-registry.php	11.57 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-parser-frame.php	1.95 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-pattern-categories-registry.php	4.28 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-patterns-registry.php	10.07 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-templates-registry.php	6.91 KB	-rw-r--r--	2026-07-29 12:56
class-wp-classic-to-block-menu-converter.php	3.93 KB	-rw-r--r--	2026-07-29 12:56
class-wp-customize-nav-menus.php	56.61 KB	-rw-r--r--	2026-07-29 12:56
class-wp-fatal-error-handler.php	7.96 KB	-rw-r--r--	2024-10-22 10:16
class-wp-http-ixr-client.php	3.43 KB	-rw-r--r--	2026-07-29 12:56
class-wp-http-requests-response.php	4.14 KB	-rw-r--r--	2026-07-29 12:56
class-wp-list-util.php	7.27 KB	-rw-r--r--	2024-02-27 22:38
class-wp-post-type.php	29.95 KB	-rw-r--r--	2026-07-29 12:56
class-wp-recovery-mode-key-service.php	4.8 KB	-rw-r--r--	2026-07-29 12:56
class-wp-text-diff-renderer-table.php	18.49 KB	-rw-r--r--	2026-07-29 12:56
class-wp-theme-json-data.php	1.77 KB	-rw-r--r--	2024-06-04 11:55
class-wp-theme-json-schema.php	7.19 KB	-rw-r--r--	2024-06-06 08:02
default-filters.php	36.54 KB	-rw-r--r--	2026-07-29 12:56
ms-default-filters.php	6.48 KB	-rw-r--r--	2023-02-24 01:23
post-template.php	67.01 KB	-rw-r--r--	2026-07-29 12:56

Rename

<?php
/**
 * WP_Classic_To_Block_Menu_Converter class
 *
 * @package WordPress
 * @since 6.3.0
 */

/**
 * Converts a Classic Menu to Block Menu blocks.
 *
 * @since 6.3.0
 */
class WP_Classic_To_Block_Menu_Converter {

/**
	 * Converts a Classic Menu to blocks.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_Term $menu The Menu term object of the menu to convert.
	 * @return string|WP_Error The serialized and normalized parsed blocks on success,
	 *                         an empty string when there are no menus to convert,
	 *                         or WP_Error on invalid menu.
	 */
	public static function convert( $menu ) {

if ( ! is_nav_menu( $menu ) ) {
			return new WP_Error(
				'invalid_menu',
				__( 'The menu provided is not a valid menu.' )
			);
		}

$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) );

if ( empty( $menu_items ) ) {
			return '';
		}

// Set up the $menu_item variables.
		// Adds the class property classes for the current context, if applicable.
		_wp_menu_item_classes_by_context( $menu_items );

$menu_items_by_parent_id = static::group_by_parent_id( $menu_items );

$first_menu_item = $menu_items_by_parent_id[0] ?? array();

$inner_blocks = static::to_blocks(
			$first_menu_item,
			$menu_items_by_parent_id
		);

return serialize_blocks( $inner_blocks );
	}

/**
	 * Returns an array of menu items grouped by the id of the parent menu item.
	 *
	 * @since 6.3.0
	 *
	 * @param array $menu_items An array of menu items.
	 * @return array
	 */
	private static function group_by_parent_id( $menu_items ) {
		$menu_items_by_parent_id = array();

foreach ( $menu_items as $menu_item ) {
			$menu_items_by_parent_id[ $menu_item->menu_item_parent ][] = $menu_item;
		}

return $menu_items_by_parent_id;
	}

/**
	 * Turns menu item data into a nested array of parsed blocks
	 *
	 * @since 6.3.0
	 *
	 * @param array $menu_items              An array of menu items that represent
	 *                                       an individual level of a menu.
	 * @param array $menu_items_by_parent_id An array keyed by the id of the
	 *                                       parent menu where each element is an
	 *                                       array of menu items that belong to
	 *                                       that parent.
	 * @return array An array of parsed block data.
	 */
	private static function to_blocks( $menu_items, $menu_items_by_parent_id ) {

if ( empty( $menu_items ) ) {
			return array();
		}

$blocks = array();

foreach ( $menu_items as $menu_item ) {
			$class_name       = ! empty( $menu_item->classes ) ? implode( ' ', (array) $menu_item->classes ) : null;
			$id               = ( null !== $menu_item->object_id && 'custom' !== $menu_item->object ) ? $menu_item->object_id : null;
			$opens_in_new_tab = null !== $menu_item->target && '_blank' === $menu_item->target;
			$rel              = ( null !== $menu_item->xfn && '' !== $menu_item->xfn ) ? $menu_item->xfn : null;
			$kind             = null !== $menu_item->type ? str_replace( '_', '-', $menu_item->type ) : 'custom';

$block = array(
				'blockName' => isset( $menu_items_by_parent_id[ $menu_item->ID ] ) ? 'core/navigation-submenu' : 'core/navigation-link',
				'attrs'     => array(
					'className'     => $class_name,
					'description'   => $menu_item->description,
					'id'            => $id,
					'kind'          => $kind,
					'label'         => $menu_item->title,
					'opensInNewTab' => $opens_in_new_tab,
					'rel'           => $rel,
					'title'         => $menu_item->attr_title,
					'type'          => $menu_item->object,
					'url'           => $menu_item->url,
				),
			);

$block['innerBlocks']  = isset( $menu_items_by_parent_id[ $menu_item->ID ] )
			? static::to_blocks( $menu_items_by_parent_id[ $menu_item->ID ], $menu_items_by_parent_id )
			: array();
			$block['innerContent'] = array_map( 'serialize_block', $block['innerBlocks'] );

$blocks[] = $block;
		}

return $blocks;
	}
}