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Edit File : class-wp-navigation-fallback.php \| Size : 8.98 KB
<?php /** * WP_Navigation_Fallback class * * Manages fallback behavior for Navigation menus. * * @package WordPress * @subpackage Navigation * @since 6.3.0 / /* * Manages fallback behavior for Navigation menus. * * @since 6.3.0 / class WP_Navigation_Fallback { /* * Updates the wp_navigation custom post type schema, in order to expose * additional fields in the embeddable links of WP_REST_Navigation_Fallback_Controller. * * The Navigation Fallback endpoint may embed the full Navigation Menu object * into the response as the `self` link. By default, the Posts Controller * will only expose a limited subset of fields but the editor requires * additional fields to be available in order to utilize the menu. * * Used with the `rest_wp_navigation_item_schema` hook. * * @since 6.4.0 * * @param array $schema The schema for the `wp_navigation` post. * @return array The modified schema. / public static function update_wp_navigation_post_schema( $schema ) { // Expose top level fields. $schema['properties']['status']['context'] = array_merge( $schema['properties']['status']['context'], array( 'embed' ) ); $schema['properties']['content']['context'] = array_merge( $schema['properties']['content']['context'], array( 'embed' ) ); / * Exposes sub properties of content field. * These sub properties aren't exposed by the posts controller by default, * for requests where context is `embed`. * * @see WP_REST_Posts_Controller::get_item_schema() / $schema['properties']['content']['properties']['raw']['context'] = array_merge( $schema['properties']['content']['properties']['raw']['context'], array( 'embed' ) ); $schema['properties']['content']['properties']['rendered']['context'] = array_merge( $schema['properties']['content']['properties']['rendered']['context'], array( 'embed' ) ); $schema['properties']['content']['properties']['block_version']['context'] = array_merge( $schema['properties']['content']['properties']['block_version']['context'], array( 'embed' ) ); / * Exposes sub properties of title field. * These sub properties aren't exposed by the posts controller by default, * for requests where context is `embed`. * * @see WP_REST_Posts_Controller::get_item_schema() / $schema['properties']['title']['properties']['raw']['context'] = array_merge( $schema['properties']['title']['properties']['raw']['context'], array( 'embed' ) ); return $schema; } /* * Gets (and/or creates) an appropriate fallback Navigation Menu. * * @since 6.3.0 * * @return WP_Post\|null the fallback Navigation Post or null. / public static function get_fallback() { /* * Filters whether or not a fallback should be created. * * @since 6.3.0 * * @param bool $create Whether to create a fallback navigation menu. Default true. / $should_create_fallback = apply_filters( 'wp_navigation_should_create_fallback', true ); $fallback = static::get_most_recently_published_navigation(); if ( $fallback \|\| ! $should_create_fallback ) { return $fallback; } $fallback = static::create_classic_menu_fallback(); if ( $fallback && ! is_wp_error( $fallback ) ) { // Return the newly created fallback post object which will now be the most recently created navigation menu. return $fallback instanceof WP_Post ? $fallback : static::get_most_recently_published_navigation(); } $fallback = static::create_default_fallback(); if ( $fallback && ! is_wp_error( $fallback ) ) { // Return the newly created fallback post object which will now be the most recently created navigation menu. return $fallback instanceof WP_Post ? $fallback : static::get_most_recently_published_navigation(); } return null; } /* * Finds the most recently published `wp_navigation` post type. * * @since 6.3.0 * * @return WP_Post\|null the first non-empty Navigation or null. / private static function get_most_recently_published_navigation() { $parsed_args = array( 'post_type' => 'wp_navigation', 'no_found_rows' => true, 'update_post_meta_cache' => false, 'update_post_term_cache' => false, 'order' => 'DESC', 'orderby' => 'date', 'post_status' => 'publish', 'posts_per_page' => 1, ); $navigation_post = new WP_Query( $parsed_args ); if ( count( $navigation_post->posts ) > 0 ) { return $navigation_post->posts[0]; } return null; } /* * Creates a Navigation Menu post from a Classic Menu. * * @since 6.3.0 * * @return int\|WP_Error The post ID of the default fallback menu or a WP_Error object. / private static function create_classic_menu_fallback() { // See if we have a classic menu. $classic_nav_menu = static::get_fallback_classic_menu(); if ( ! $classic_nav_menu ) { return new WP_Error( 'no_classic_menus', __( 'No Classic Menus found.' ) ); } // If there is a classic menu then convert it to blocks. $classic_nav_menu_blocks = WP_Classic_To_Block_Menu_Converter::convert( $classic_nav_menu ); if ( is_wp_error( $classic_nav_menu_blocks ) ) { return $classic_nav_menu_blocks; } if ( empty( $classic_nav_menu_blocks ) ) { return new WP_Error( 'cannot_convert_classic_menu', __( 'Unable to convert Classic Menu to blocks.' ) ); } // Create a new navigation menu from the classic menu. $classic_menu_fallback = wp_insert_post( array( 'post_content' => $classic_nav_menu_blocks, 'post_title' => $classic_nav_menu->name, 'post_name' => $classic_nav_menu->slug, 'post_status' => 'publish', 'post_type' => 'wp_navigation', ), true // So that we can check whether the result is an error. ); return $classic_menu_fallback; } /* * Determines the most appropriate classic navigation menu to use as a fallback. * * @since 6.3.0 * * @return WP_Term\|null The most appropriate classic navigation menu to use as a fallback. / private static function get_fallback_classic_menu() { $classic_nav_menus = wp_get_nav_menus(); if ( ! $classic_nav_menus \|\| is_wp_error( $classic_nav_menus ) ) { return null; } $nav_menu = static::get_nav_menu_at_primary_location(); if ( $nav_menu ) { return $nav_menu; } $nav_menu = static::get_nav_menu_with_primary_slug( $classic_nav_menus ); if ( $nav_menu ) { return $nav_menu; } return static::get_most_recently_created_nav_menu( $classic_nav_menus ); } /* * Sorts the classic menus and returns the most recently created one. * * @since 6.3.0 * * @param WP_Term[] $classic_nav_menus Array of classic nav menu term objects. * @return WP_Term The most recently created classic nav menu. / private static function get_most_recently_created_nav_menu( $classic_nav_menus ) { usort( $classic_nav_menus, static function ( $a, $b ) { return $b->term_id - $a->term_id; } ); return $classic_nav_menus[0]; } /* * Returns the classic menu with the slug `primary` if it exists. * * @since 6.3.0 * * @param WP_Term[] $classic_nav_menus Array of classic nav menu term objects. * @return WP_Term\|null The classic nav menu with the slug `primary` or null. / private static function get_nav_menu_with_primary_slug( $classic_nav_menus ) { foreach ( $classic_nav_menus as $classic_nav_menu ) { if ( 'primary' === $classic_nav_menu->slug ) { return $classic_nav_menu; } } return null; } /* * Gets the classic menu assigned to the `primary` navigation menu location * if it exists. * * @since 6.3.0 * * @return WP_Term\|null The classic nav menu assigned to the `primary` location or null. / private static function get_nav_menu_at_primary_location() { $locations = get_nav_menu_locations(); if ( isset( $locations['primary'] ) ) { $primary_menu = wp_get_nav_menu_object( $locations['primary'] ); if ( $primary_menu ) { return $primary_menu; } } return null; } /* * Creates a default Navigation Block Menu fallback. * * @since 6.3.0 * * @return int\|WP_Error The post ID of the default fallback menu or a WP_Error object. / private static function create_default_fallback() { $default_blocks = static::get_default_fallback_blocks(); // Create a new navigation menu from the fallback blocks. $default_fallback = wp_insert_post( array( 'post_content' => $default_blocks, 'post_title' => _x( 'Navigation', 'Title of a Navigation menu' ), 'post_name' => 'navigation', 'post_status' => 'publish', 'post_type' => 'wp_navigation', ), true // So that we can check whether the result is an error. ); return $default_fallback; } /* * Gets the rendered markup for the default fallback blocks. * * @since 6.3.0 * * @return string default blocks markup to use a the fallback. */ private static function get_default_fallback_blocks() { $registry = WP_Block_Type_Registry::get_instance(); // If `core/page-list` is not registered then use empty blocks. return $registry->is_registered( 'core/page-list' ) ? '<!-- wp:page-list /-->' : ''; } } Back

Edit File : class-wp-navigation-fallback.php | Size : 8.98 KB

<?php
/**
 * WP_Navigation_Fallback class
 *
 * Manages fallback behavior for Navigation menus.
 *
 * @package WordPress
 * @subpackage Navigation
 * @since 6.3.0
 */

/**
 * Manages fallback behavior for Navigation menus.
 *
 * @since 6.3.0
 */
class WP_Navigation_Fallback {

/**
	 * Updates the wp_navigation custom post type schema, in order to expose
	 * additional fields in the embeddable links of WP_REST_Navigation_Fallback_Controller.
	 *
	 * The Navigation Fallback endpoint may embed the full Navigation Menu object
	 * into the response as the `self` link. By default, the Posts Controller
	 * will only expose a limited subset of fields but the editor requires
	 * additional fields to be available in order to utilize the menu.
	 *
	 * Used with the `rest_wp_navigation_item_schema` hook.
	 *
	 * @since 6.4.0
	 *
	 * @param array $schema The schema for the `wp_navigation` post.
	 * @return array The modified schema.
	 */
	public static function update_wp_navigation_post_schema( $schema ) {
		// Expose top level fields.
		$schema['properties']['status']['context']  = array_merge( $schema['properties']['status']['context'], array( 'embed' ) );
		$schema['properties']['content']['context'] = array_merge( $schema['properties']['content']['context'], array( 'embed' ) );

/*
		 * Exposes sub properties of content field.
		 * These sub properties aren't exposed by the posts controller by default,
		 * for requests where context is `embed`.
		 *
		 * @see WP_REST_Posts_Controller::get_item_schema()
		 */
		$schema['properties']['content']['properties']['raw']['context']           = array_merge( $schema['properties']['content']['properties']['raw']['context'], array( 'embed' ) );
		$schema['properties']['content']['properties']['rendered']['context']      = array_merge( $schema['properties']['content']['properties']['rendered']['context'], array( 'embed' ) );
		$schema['properties']['content']['properties']['block_version']['context'] = array_merge( $schema['properties']['content']['properties']['block_version']['context'], array( 'embed' ) );

/*
		 * Exposes sub properties of title field.
		 * These sub properties aren't exposed by the posts controller by default,
		 * for requests where context is `embed`.
		 *
		 * @see WP_REST_Posts_Controller::get_item_schema()
		 */
		$schema['properties']['title']['properties']['raw']['context'] = array_merge( $schema['properties']['title']['properties']['raw']['context'], array( 'embed' ) );

return $schema;
	}

/**
	 * Gets (and/or creates) an appropriate fallback Navigation Menu.
	 *
	 * @since 6.3.0
	 *
	 * @return WP_Post|null the fallback Navigation Post or null.
	 */
	public static function get_fallback() {
		/**
		 * Filters whether or not a fallback should be created.
		 *
		 * @since 6.3.0
		 *
		 * @param bool $create Whether to create a fallback navigation menu. Default true.
		 */
		$should_create_fallback = apply_filters( 'wp_navigation_should_create_fallback', true );

$fallback = static::get_most_recently_published_navigation();

if ( $fallback || ! $should_create_fallback ) {
			return $fallback;
		}

$fallback = static::create_classic_menu_fallback();

if ( $fallback && ! is_wp_error( $fallback ) ) {
			// Return the newly created fallback post object which will now be the most recently created navigation menu.
			return $fallback instanceof WP_Post ? $fallback : static::get_most_recently_published_navigation();
		}

$fallback = static::create_default_fallback();

return null;
	}

/**
	 * Finds the most recently published `wp_navigation` post type.
	 *
	 * @since 6.3.0
	 *
	 * @return WP_Post|null the first non-empty Navigation or null.
	 */
	private static function get_most_recently_published_navigation() {

$parsed_args = array(
			'post_type'              => 'wp_navigation',
			'no_found_rows'          => true,
			'update_post_meta_cache' => false,
			'update_post_term_cache' => false,
			'order'                  => 'DESC',
			'orderby'                => 'date',
			'post_status'            => 'publish',
			'posts_per_page'         => 1,
		);

$navigation_post = new WP_Query( $parsed_args );

if ( count( $navigation_post->posts ) > 0 ) {
			return $navigation_post->posts[0];
		}

return null;
	}

/**
	 * Creates a Navigation Menu post from a Classic Menu.
	 *
	 * @since 6.3.0
	 *
	 * @return int|WP_Error The post ID of the default fallback menu or a WP_Error object.
	 */
	private static function create_classic_menu_fallback() {
		// See if we have a classic menu.
		$classic_nav_menu = static::get_fallback_classic_menu();

if ( ! $classic_nav_menu ) {
			return new WP_Error( 'no_classic_menus', __( 'No Classic Menus found.' ) );
		}

// If there is a classic menu then convert it to blocks.
		$classic_nav_menu_blocks = WP_Classic_To_Block_Menu_Converter::convert( $classic_nav_menu );

if ( is_wp_error( $classic_nav_menu_blocks ) ) {
			return $classic_nav_menu_blocks;
		}

if ( empty( $classic_nav_menu_blocks ) ) {
			return new WP_Error( 'cannot_convert_classic_menu', __( 'Unable to convert Classic Menu to blocks.' ) );
		}

// Create a new navigation menu from the classic menu.
		$classic_menu_fallback = wp_insert_post(
			array(
				'post_content' => $classic_nav_menu_blocks,
				'post_title'   => $classic_nav_menu->name,
				'post_name'    => $classic_nav_menu->slug,
				'post_status'  => 'publish',
				'post_type'    => 'wp_navigation',
			),
			true // So that we can check whether the result is an error.
		);

return $classic_menu_fallback;
	}

/**
	 * Determines the most appropriate classic navigation menu to use as a fallback.
	 *
	 * @since 6.3.0
	 *
	 * @return WP_Term|null The most appropriate classic navigation menu to use as a fallback.
	 */
	private static function get_fallback_classic_menu() {
		$classic_nav_menus = wp_get_nav_menus();

if ( ! $classic_nav_menus || is_wp_error( $classic_nav_menus ) ) {
			return null;
		}

$nav_menu = static::get_nav_menu_at_primary_location();

if ( $nav_menu ) {
			return $nav_menu;
		}

$nav_menu = static::get_nav_menu_with_primary_slug( $classic_nav_menus );

if ( $nav_menu ) {
			return $nav_menu;
		}

return static::get_most_recently_created_nav_menu( $classic_nav_menus );
	}

/**
	 * Sorts the classic menus and returns the most recently created one.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_Term[] $classic_nav_menus Array of classic nav menu term objects.
	 * @return WP_Term The most recently created classic nav menu.
	 */
	private static function get_most_recently_created_nav_menu( $classic_nav_menus ) {
		usort(
			$classic_nav_menus,
			static function ( $a, $b ) {
				return $b->term_id - $a->term_id;
			}
		);

return $classic_nav_menus[0];
	}

/**
	 * Returns the classic menu with the slug `primary` if it exists.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_Term[] $classic_nav_menus Array of classic nav menu term objects.
	 * @return WP_Term|null The classic nav menu with the slug `primary` or null.
	 */
	private static function get_nav_menu_with_primary_slug( $classic_nav_menus ) {
		foreach ( $classic_nav_menus as $classic_nav_menu ) {
			if ( 'primary' === $classic_nav_menu->slug ) {
				return $classic_nav_menu;
			}
		}

return null;
	}

/**
	 * Gets the classic menu assigned to the `primary` navigation menu location
	 * if it exists.
	 *
	 * @since 6.3.0
	 *
	 * @return WP_Term|null The classic nav menu assigned to the `primary` location or null.
	 */
	private static function get_nav_menu_at_primary_location() {
		$locations = get_nav_menu_locations();

if ( isset( $locations['primary'] ) ) {
			$primary_menu = wp_get_nav_menu_object( $locations['primary'] );

if ( $primary_menu ) {
				return $primary_menu;
			}
		}

return null;
	}

/**
	 * Creates a default Navigation Block Menu fallback.
	 *
	 * @since 6.3.0
	 *
	 * @return int|WP_Error The post ID of the default fallback menu or a WP_Error object.
	 */
	private static function create_default_fallback() {

$default_blocks = static::get_default_fallback_blocks();

// Create a new navigation menu from the fallback blocks.
		$default_fallback = wp_insert_post(
			array(
				'post_content' => $default_blocks,
				'post_title'   => _x( 'Navigation', 'Title of a Navigation menu' ),
				'post_name'    => 'navigation',
				'post_status'  => 'publish',
				'post_type'    => 'wp_navigation',
			),
			true // So that we can check whether the result is an error.
		);

return $default_fallback;
	}

/**
	 * Gets the rendered markup for the default fallback blocks.
	 *
	 * @since 6.3.0
	 *
	 * @return string default blocks markup to use a the fallback.
	 */
	private static function get_default_fallback_blocks() {
		$registry = WP_Block_Type_Registry::get_instance();

// If `core/page-list` is not registered then use empty blocks.
		return $registry->is_registered( 'core/page-list' ) ? '' : '';
	}
}

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