133 lines
4.0 KiB
PHP
133 lines
4.0 KiB
PHP
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<?php
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/**
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* WP_Classic_To_Block_Menu_Converter class
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*
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* @package WordPress
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* @since 6.3.0
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*/
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/**
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* Converts a Classic Menu to Block Menu blocks.
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*
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* @since 6.3.0
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* @access public
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*/
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class WP_Classic_To_Block_Menu_Converter {
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/**
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* Converts a Classic Menu to blocks.
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*
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* @since 6.3.0
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*
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* @param WP_Term $menu The Menu term object of the menu to convert.
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* @return string|WP_Error The serialized and normalized parsed blocks on success,
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* an empty string when there are no menus to convert,
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* or WP_Error on invalid menu.
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*/
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public static function convert( $menu ) {
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if ( ! is_nav_menu( $menu ) ) {
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return new WP_Error(
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'invalid_menu',
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__( 'The menu provided is not a valid menu.' )
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);
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}
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$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) );
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if ( empty( $menu_items ) ) {
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return '';
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}
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// Set up the $menu_item variables.
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// Adds the class property classes for the current context, if applicable.
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_wp_menu_item_classes_by_context( $menu_items );
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$menu_items_by_parent_id = static::group_by_parent_id( $menu_items );
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$first_menu_item = isset( $menu_items_by_parent_id[0] )
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? $menu_items_by_parent_id[0]
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: array();
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$inner_blocks = static::to_blocks(
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$first_menu_item,
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$menu_items_by_parent_id
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);
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return serialize_blocks( $inner_blocks );
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}
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/**
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* Returns an array of menu items grouped by the id of the parent menu item.
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*
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* @since 6.3.0
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*
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* @param array $menu_items An array of menu items.
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* @return array
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*/
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private static function group_by_parent_id( $menu_items ) {
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$menu_items_by_parent_id = array();
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foreach ( $menu_items as $menu_item ) {
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$menu_items_by_parent_id[ $menu_item->menu_item_parent ][] = $menu_item;
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}
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return $menu_items_by_parent_id;
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}
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/**
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* Turns menu item data into a nested array of parsed blocks
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*
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* @since 6.3.0
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*
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* @param array $menu_items An array of menu items that represent
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* an individual level of a menu.
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* @param array $menu_items_by_parent_id An array keyed by the id of the
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* parent menu where each element is an
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* array of menu items that belong to
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* that parent.
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* @return array An array of parsed block data.
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*/
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private static function to_blocks( $menu_items, $menu_items_by_parent_id ) {
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if ( empty( $menu_items ) ) {
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return array();
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}
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$blocks = array();
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foreach ( $menu_items as $menu_item ) {
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$class_name = ! empty( $menu_item->classes ) ? implode( ' ', (array) $menu_item->classes ) : null;
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$id = ( null !== $menu_item->object_id && 'custom' !== $menu_item->object ) ? $menu_item->object_id : null;
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$opens_in_new_tab = null !== $menu_item->target && '_blank' === $menu_item->target;
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$rel = ( null !== $menu_item->xfn && '' !== $menu_item->xfn ) ? $menu_item->xfn : null;
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$kind = null !== $menu_item->type ? str_replace( '_', '-', $menu_item->type ) : 'custom';
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$block = array(
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'blockName' => isset( $menu_items_by_parent_id[ $menu_item->ID ] ) ? 'core/navigation-submenu' : 'core/navigation-link',
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'attrs' => array(
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'className' => $class_name,
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'description' => $menu_item->description,
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'id' => $id,
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'kind' => $kind,
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'label' => $menu_item->title,
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'opensInNewTab' => $opens_in_new_tab,
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'rel' => $rel,
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'title' => $menu_item->attr_title,
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'type' => $menu_item->object,
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'url' => $menu_item->url,
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),
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);
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$block['innerBlocks'] = isset( $menu_items_by_parent_id[ $menu_item->ID ] )
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? static::to_blocks( $menu_items_by_parent_id[ $menu_item->ID ], $menu_items_by_parent_id )
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: array();
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$block['innerContent'] = array_map( 'serialize_block', $block['innerBlocks'] );
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$blocks[] = $block;
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}
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return $blocks;
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}
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}
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