term_id, array( 'update_post_term_cache' => false ) );
_wp_menu_item_classes_by_context( $menu_items );
return $menu_items;
}
/**
* Sorts a standard array of menu items into a nested structure keyed by the
* id of the parent menu.
*
* @param array $menu_items Menu items to sort.
* @return array An array keyed by the id of the parent menu where each element
* is an array of menu items that belong to that parent.
*/
function block_core_navigation_sort_menu_items_by_parent_id( $menu_items ) {
$sorted_menu_items = array();
foreach ( (array) $menu_items as $menu_item ) {
$sorted_menu_items[ $menu_item->menu_order ] = $menu_item;
}
unset( $menu_items, $menu_item );
$menu_items_by_parent_id = array();
foreach ( $sorted_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
*
* @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.
*/
function block_core_navigation_parse_blocks_from_menu_items( $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 ] )
? block_core_navigation_parse_blocks_from_menu_items( $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;
}
/**
* Build an array with CSS classes and inline styles defining the colors
* which will be applied to the navigation markup in the front-end.
*
* @param array $attributes Navigation block attributes.
*
* @return array Colors CSS classes and inline styles.
*/
function block_core_navigation_build_css_colors( $attributes ) {
$colors = array(
'css_classes' => array(),
'inline_styles' => '',
'overlay_css_classes' => array(),
'overlay_inline_styles' => '',
);
// Text color.
$has_named_text_color = array_key_exists( 'textColor', $attributes );
$has_custom_text_color = array_key_exists( 'customTextColor', $attributes );
// If has text color.
if ( $has_custom_text_color || $has_named_text_color ) {
// Add has-text-color class.
$colors['css_classes'][] = 'has-text-color';
}
if ( $has_named_text_color ) {
// Add the color class.
$colors['css_classes'][] = sprintf( 'has-%s-color', $attributes['textColor'] );
} elseif ( $has_custom_text_color ) {
// Add the custom color inline style.
$colors['inline_styles'] .= sprintf( 'color: %s;', $attributes['customTextColor'] );
}
// Background color.
$has_named_background_color = array_key_exists( 'backgroundColor', $attributes );
$has_custom_background_color = array_key_exists( 'customBackgroundColor', $attributes );
// If has background color.
if ( $has_custom_background_color || $has_named_background_color ) {
// Add has-background class.
$colors['css_classes'][] = 'has-background';
}
if ( $has_named_background_color ) {
// Add the background-color class.
$colors['css_classes'][] = sprintf( 'has-%s-background-color', $attributes['backgroundColor'] );
} elseif ( $has_custom_background_color ) {
// Add the custom background-color inline style.
$colors['inline_styles'] .= sprintf( 'background-color: %s;', $attributes['customBackgroundColor'] );
}
// Overlay text color.
$has_named_overlay_text_color = array_key_exists( 'overlayTextColor', $attributes );
$has_custom_overlay_text_color = array_key_exists( 'customOverlayTextColor', $attributes );
// If has overlay text color.
if ( $has_custom_overlay_text_color || $has_named_overlay_text_color ) {
// Add has-text-color class.
$colors['overlay_css_classes'][] = 'has-text-color';
}
if ( $has_named_overlay_text_color ) {
// Add the overlay color class.
$colors['overlay_css_classes'][] = sprintf( 'has-%s-color', $attributes['overlayTextColor'] );
} elseif ( $has_custom_overlay_text_color ) {
// Add the custom overlay color inline style.
$colors['overlay_inline_styles'] .= sprintf( 'color: %s;', $attributes['customOverlayTextColor'] );
}
// Overlay background color.
$has_named_overlay_background_color = array_key_exists( 'overlayBackgroundColor', $attributes );
$has_custom_overlay_background_color = array_key_exists( 'customOverlayBackgroundColor', $attributes );
// If has overlay background color.
if ( $has_custom_overlay_background_color || $has_named_overlay_background_color ) {
// Add has-background class.
$colors['overlay_css_classes'][] = 'has-background';
}
if ( $has_named_overlay_background_color ) {
// Add the overlay background-color class.
$colors['overlay_css_classes'][] = sprintf( 'has-%s-background-color', $attributes['overlayBackgroundColor'] );
} elseif ( $has_custom_overlay_background_color ) {
// Add the custom overlay background-color inline style.
$colors['overlay_inline_styles'] .= sprintf( 'background-color: %s;', $attributes['customOverlayBackgroundColor'] );
}
return $colors;
}
/**
* Build an array with CSS classes and inline styles defining the font sizes
* which will be applied to the navigation markup in the front-end.
*
* @param array $attributes Navigation block attributes.
*
* @return array Font size CSS classes and inline styles.
*/
function block_core_navigation_build_css_font_sizes( $attributes ) {
// CSS classes.
$font_sizes = array(
'css_classes' => array(),
'inline_styles' => '',
);
$has_named_font_size = array_key_exists( 'fontSize', $attributes );
$has_custom_font_size = array_key_exists( 'customFontSize', $attributes );
if ( $has_named_font_size ) {
// Add the font size class.
$font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $attributes['fontSize'] );
} elseif ( $has_custom_font_size ) {
// Add the custom font size inline style.
$font_sizes['inline_styles'] = sprintf( 'font-size: %spx;', $attributes['customFontSize'] );
}
return $font_sizes;
}
/**
* Returns the top-level submenu SVG chevron icon.
*
* @return string
*/
function block_core_navigation_render_submenu_icon() {
return '';
}
/**
* Get the classic navigation menu to use as a fallback.
*
* @return object WP_Term The classic navigation.
*/
function block_core_navigation_get_classic_menu_fallback() {
$classic_nav_menus = wp_get_nav_menus();
// If menus exist.
if ( $classic_nav_menus && ! is_wp_error( $classic_nav_menus ) ) {
// Handles simple use case where user has a classic menu and switches to a block theme.
// Returns the menu assigned to location `primary`.
$locations = get_nav_menu_locations();
if ( isset( $locations['primary'] ) ) {
$primary_menu = wp_get_nav_menu_object( $locations['primary'] );
if ( $primary_menu ) {
return $primary_menu;
}
}
// Returns a menu if `primary` is its slug.
foreach ( $classic_nav_menus as $classic_nav_menu ) {
if ( 'primary' === $classic_nav_menu->slug ) {
return $classic_nav_menu;
}
}
// Otherwise return the most recently created classic menu.
usort(
$classic_nav_menus,
function( $a, $b ) {
return $b->term_id - $a->term_id;
}
);
return $classic_nav_menus[0];
}
}
/**
* Converts a classic navigation to blocks.
*
* @param object $classic_nav_menu WP_Term The classic navigation object to convert.
* @return array the normalized parsed blocks.
*/
function block_core_navigation_get_classic_menu_fallback_blocks( $classic_nav_menu ) {
// BEGIN: Code that already exists in wp_nav_menu().
$menu_items = wp_get_nav_menu_items( $classic_nav_menu->term_id, array( 'update_post_term_cache' => false ) );
// Set up the $menu_item variables.
_wp_menu_item_classes_by_context( $menu_items );
$sorted_menu_items = array();
foreach ( (array) $menu_items as $menu_item ) {
$sorted_menu_items[ $menu_item->menu_order ] = $menu_item;
}
unset( $menu_items, $menu_item );
// END: Code that already exists in wp_nav_menu().
$menu_items_by_parent_id = array();
foreach ( $sorted_menu_items as $menu_item ) {
$menu_items_by_parent_id[ $menu_item->menu_item_parent ][] = $menu_item;
}
$inner_blocks = block_core_navigation_parse_blocks_from_menu_items(
isset( $menu_items_by_parent_id[0] )
? $menu_items_by_parent_id[0]
: array(),
$menu_items_by_parent_id
);
return serialize_blocks( $inner_blocks );
}
/**
* If there's a the classic menu then use it as a fallback.
*
* @return array the normalized parsed blocks.
*/
function block_core_navigation_maybe_use_classic_menu_fallback() {
// See if we have a classic menu.
$classic_nav_menu = block_core_navigation_get_classic_menu_fallback();
if ( ! $classic_nav_menu ) {
return;
}
// If we have a classic menu then convert it to blocks.
$classic_nav_menu_blocks = block_core_navigation_get_classic_menu_fallback_blocks( $classic_nav_menu );
if ( empty( $classic_nav_menu_blocks ) ) {
return;
}
// Create a new navigation menu from the classic menu.
$wp_insert_post_result = wp_insert_post(
array(
'post_content' => $classic_nav_menu_blocks,
'post_title' => $classic_nav_menu->slug,
'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.
);
if ( is_wp_error( $wp_insert_post_result ) ) {
return;
}
// Fetch the most recently published navigation which will be the classic one created above.
return block_core_navigation_get_most_recently_published_navigation();
}
/**
* Finds the most recently published `wp_navigation` Post.
*
* @return WP_Post|null the first non-empty Navigation or null.
*/
function block_core_navigation_get_most_recently_published_navigation() {
// Default to the most recently created menu.
$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, // get only the most recent.
);
$navigation_post = new WP_Query( $parsed_args );
if ( count( $navigation_post->posts ) > 0 ) {
return $navigation_post->posts[0];
}
return null;
}
/**
* Filter out empty "null" blocks from the block list.
* 'parse_blocks' includes a null block with '\n\n' as the content when
* it encounters whitespace. This is not a bug but rather how the parser
* is designed.
*
* @param array $parsed_blocks the parsed blocks to be normalized.
* @return array the normalized parsed blocks.
*/
function block_core_navigation_filter_out_empty_blocks( $parsed_blocks ) {
$filtered = array_filter(
$parsed_blocks,
function( $block ) {
return isset( $block['blockName'] );
}
);
// Reset keys.
return array_values( $filtered );
}
/**
* Returns true if the navigation block contains a nested navigation block.
*
* @param WP_Block_List $inner_blocks Inner block instance to be normalized.
* @return bool true if the navigation block contains a nested navigation block.
*/
function block_core_navigation_block_contains_core_navigation( $inner_blocks ) {
foreach ( $inner_blocks as $block ) {
if ( 'core/navigation' === $block->name ) {
return true;
}
if ( $block->inner_blocks && block_core_navigation_block_contains_core_navigation( $block->inner_blocks ) ) {
return true;
}
}
return false;
}
/**
* Retrieves the appropriate fallback to be used on the front of the
* site when there is no menu assigned to the Nav block.
*
* This aims to mirror how the fallback mechanic for wp_nav_menu works.
* See https://developer.wordpress.org/reference/functions/wp_nav_menu/#more-information.
*
* @return array the array of blocks to be used as a fallback.
*/
function block_core_navigation_get_fallback_blocks() {
$page_list_fallback = array(
array(
'blockName' => 'core/page-list',
),
);
$registry = WP_Block_Type_Registry::get_instance();
// If `core/page-list` is not registered then return empty blocks.
$fallback_blocks = $registry->is_registered( 'core/page-list' ) ? $page_list_fallback : array();
// Default to a list of Pages.
$navigation_post = block_core_navigation_get_most_recently_published_navigation();
// If there are no navigation posts then try to find a classic menu
// and convert it into a block based navigation menu.
if ( ! $navigation_post ) {
$navigation_post = block_core_navigation_maybe_use_classic_menu_fallback();
}
// Use the first non-empty Navigation as fallback if available.
if ( $navigation_post ) {
$parsed_blocks = parse_blocks( $navigation_post->post_content );
$maybe_fallback = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
// Normalizing blocks may result in an empty array of blocks if they were all `null` blocks.
// In this case default to the (Page List) fallback.
$fallback_blocks = ! empty( $maybe_fallback ) ? $maybe_fallback : $fallback_blocks;
}
/**
* Filters the fallback experience for the Navigation block.
*
* Returning a falsey value will opt out of the fallback and cause the block not to render.
* To customise the blocks provided return an array of blocks - these should be valid
* children of the `core/navigation` block.
*
* @since 5.9.0
*
* @param array[] default fallback blocks provided by the default block mechanic.
*/
return apply_filters( 'block_core_navigation_render_fallback', $fallback_blocks );
}
/**
* Iterate through all inner blocks recursively and get navigation link block's post IDs.
*
* @param WP_Block_List $inner_blocks Block list class instance.
*
* @return array Array of post IDs.
*/
function block_core_navigation_get_post_ids( $inner_blocks ) {
$post_ids = array_map( 'block_core_navigation_from_block_get_post_ids', iterator_to_array( $inner_blocks ) );
return array_unique( array_merge( ...$post_ids ) );
}
/**
* Get post IDs from a navigation link block instance.
*
* @param WP_Block $block Instance of a block.
*
* @return array Array of post IDs.
*/
function block_core_navigation_from_block_get_post_ids( $block ) {
$post_ids = array();
if ( $block->inner_blocks ) {
$post_ids = block_core_navigation_get_post_ids( $block->inner_blocks );
}
if ( 'core/navigation-link' === $block->name || 'core/navigation-submenu' === $block->name ) {
if ( $block->attributes && isset( $block->attributes['kind'] ) && 'post-type' === $block->attributes['kind'] && isset( $block->attributes['id'] ) ) {
$post_ids[] = $block->attributes['id'];
}
}
return $post_ids;
}
/**
* Renders the `core/navigation` block on server.
*
* @param array $attributes The block attributes.
* @param string $content The saved content.
* @param WP_Block $block The parsed block.
*
* @return string Returns the post content with the legacy widget added.
*/
function render_block_core_navigation( $attributes, $content, $block ) {
static $seen_menu_names = array();
// Flag used to indicate whether the rendered output is considered to be
// a fallback (i.e. the block has no menu associated with it).
$is_fallback = false;
$nav_menu_name = '';
/**
* Deprecated:
* The rgbTextColor and rgbBackgroundColor attributes
* have been deprecated in favor of
* customTextColor and customBackgroundColor ones.
* Move the values from old attrs to the new ones.
*/
if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) {
$attributes['customTextColor'] = $attributes['rgbTextColor'];
}
if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) {
$attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor'];
}
unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] );
/**
* This is for backwards compatibility after `isResponsive` attribute has been removed.
*/
$has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
$is_responsive_menu = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
$should_load_view_script = ! wp_script_is( 'wp-block-navigation-view' ) && ( $is_responsive_menu || $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] );
if ( $should_load_view_script ) {
wp_enqueue_script( 'wp-block-navigation-view' );
}
$should_load_modal_view_script = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'];
if ( $should_load_modal_view_script ) {
wp_enqueue_script( 'wp-block-navigation-view-modal' );
}
$inner_blocks = $block->inner_blocks;
// Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render.
if ( array_key_exists( 'navigationMenuId', $attributes ) ) {
$attributes['ref'] = $attributes['navigationMenuId'];
}
// If:
// - the gutenberg plugin is active
// - `__unstableLocation` is defined
// - we have menu items at the defined location
// - we don't have a relationship to a `wp_navigation` Post (via `ref`).
// ...then create inner blocks from the classic menu assigned to that location.
if (
defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN &&
array_key_exists( '__unstableLocation', $attributes ) &&
! array_key_exists( 'ref', $attributes ) &&
! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) )
) {
$menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] );
if ( empty( $menu_items ) ) {
return '';
}
$menu_items_by_parent_id = block_core_navigation_sort_menu_items_by_parent_id( $menu_items );
$parsed_blocks = block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[0], $menu_items_by_parent_id );
$inner_blocks = new WP_Block_List( $parsed_blocks, $attributes );
}
// Load inner blocks from the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return '';
}
// Only published posts are valid. If this is changed then a corresponding change
// must also be implemented in `use-navigation-menu.js`.
if ( 'publish' === $navigation_post->post_status ) {
$nav_menu_name = $navigation_post->post_title;
if ( isset( $seen_menu_names[ $nav_menu_name ] ) ) {
++$seen_menu_names[ $nav_menu_name ];
} else {
$seen_menu_names[ $nav_menu_name ] = 1;
}
$parsed_blocks = parse_blocks( $navigation_post->post_content );
// 'parse_blocks' includes a null block with '\n\n' as the content when
// it encounters whitespace. This code strips it.
$compacted_blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
// TODO - this uses the full navigation block attributes for the
// context which could be refined.
$inner_blocks = new WP_Block_List( $compacted_blocks, $attributes );
}
}
// If there are no inner blocks then fallback to rendering an appropriate fallback.
if ( empty( $inner_blocks ) ) {
$is_fallback = true; // indicate we are rendering the fallback.
$fallback_blocks = block_core_navigation_get_fallback_blocks();
// Fallback my have been filtered so do basic test for validity.
if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) {
return '';
}
$inner_blocks = new WP_Block_List( $fallback_blocks, $attributes );
}
if ( block_core_navigation_block_contains_core_navigation( $inner_blocks ) ) {
return '';
}
/**
* Filter navigation block $inner_blocks.
* Allows modification of a navigation block menu items.
*
* @since 6.1.0
*
* @param \WP_Block_List $inner_blocks
*/
$inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks );
$layout_justification = array(
'left' => 'items-justified-left',
'right' => 'items-justified-right',
'center' => 'items-justified-center',
'space-between' => 'items-justified-space-between',
);
// Restore legacy classnames for submenu positioning.
$layout_class = '';
if ( isset( $attributes['layout']['justifyContent'] ) ) {
$layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ];
}
if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) {
$layout_class .= ' is-vertical';
}
if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) {
$layout_class .= ' no-wrap';
}
// Manually add block support text decoration as CSS class.
$text_decoration = _wp_array_get( $attributes, array( 'style', 'typography', 'textDecoration' ), null );
$text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );
$colors = block_core_navigation_build_css_colors( $attributes );
$font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
$classes = array_merge(
$colors['css_classes'],
$font_sizes['css_classes'],
$is_responsive_menu ? array( 'is-responsive' ) : array(),
$layout_class ? array( $layout_class ) : array(),
$is_fallback ? array( 'is-fallback' ) : array(),
$text_decoration ? array( $text_decoration_class ) : array()
);
$post_ids = block_core_navigation_get_post_ids( $inner_blocks );
if ( $post_ids ) {
_prime_post_caches( $post_ids, false, false );
}
$list_item_nav_blocks = array(
'core/navigation-link',
'core/home-link',
'core/site-title',
'core/site-logo',
'core/navigation-submenu',
);
$needs_list_item_wrapper = array(
'core/site-title',
'core/site-logo',
);
$inner_blocks_html = '';
$is_list_open = false;
foreach ( $inner_blocks as $inner_block ) {
$is_list_item = in_array( $inner_block->name, $list_item_nav_blocks, true );
if ( $is_list_item && ! $is_list_open ) {
$is_list_open = true;
$inner_blocks_html .= '