<?php
/**
* Server-side rendering of the `core/navigation` block.
*
* @package WordPress
*/
/**
* Helper functions used to render the navigation block.
*
* @since 6.5.0
*/
class WP_Navigation_Block_Renderer {
/**
* Used to determine whether or not a navigation has submenus.
*
* @since 6.5.0
*/
private static $has_submenus = false;
/**
* Used to determine which blocks need an <li> wrapper.
*
* @since 6.5.0
*
* @var array
*/
private static $needs_list_item_wrapper = array(
'core/site-title',
'core/site-logo',
'core/social-links',
);
/**
* Keeps track of all the navigation names that have been seen.
*
* @since 6.5.0
*
* @var array
*/
private static $seen_menu_names = array();
/**
* Returns whether or not this is responsive navigation.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return bool Returns whether or not this is responsive navigation.
*/
private static function is_responsive( $attributes ) {
/**
* This is for backwards compatibility after the `isResponsive` attribute was been removed.
*/
$has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
return isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
}
/**
* Returns whether or not a navigation has a submenu.
*
* @since 6.5.0
*
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return bool Returns whether or not a navigation has a submenu and also sets the member variable.
*/
private static function has_submenus( $inner_blocks ) {
if ( true === static::$has_submenus ) {
return static::$has_submenus;
}
foreach ( $inner_blocks as $inner_block ) {
// If this is a page list then work out if any of the pages have children.
if ( 'core/page-list' === $inner_block->name ) {
$all_pages = get_pages(
array(
'sort_column' => 'menu_order,post_title',
'order' => 'asc',
)
);
foreach ( (array) $all_pages as $page ) {
if ( $page->post_parent ) {
static::$has_submenus = true;
break;
}
}
}
// If this is a navigation submenu then we know we have submenus.
if ( 'core/navigation-submenu' === $inner_block->name ) {
static::$has_submenus = true;
break;
}
}
return static::$has_submenus;
}
/**
* Determine whether the navigation blocks is interactive.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return bool Returns whether or not to load the view script.
*/
private static function is_interactive( $attributes, $inner_blocks ) {
$has_submenus = static::has_submenus( $inner_blocks );
$is_responsive_menu = static::is_responsive( $attributes );
return ( $has_submenus && ( $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] ) ) || $is_responsive_menu;
}
/**
* Returns whether or not a block needs a list item wrapper.
*
* @since 6.5.0
*
* @param WP_Block $block The block.
* @return bool Returns whether or not a block needs a list item wrapper.
*/
private static function does_block_need_a_list_item_wrapper( $block ) {
/**
* Filter the list of blocks that need a list item wrapper.
*
* Affords the ability to customize which blocks need a list item wrapper when rendered
* within a core/navigation block.
* This is useful for blocks that are not list items but should be wrapped in a list
* item when used as a child of a navigation block.
*
* @since 6.5.0
*
* @param array $needs_list_item_wrapper The list of blocks that need a list item wrapper.
*/
$needs_list_item_wrapper = apply_filters( 'block_core_navigation_listable_blocks', static::$needs_list_item_wrapper );
return in_array( $block->name, $needs_list_item_wrapper, true );
}
/**
* Returns the markup for a single inner block.
*
* @since 6.5.0
*
* @param WP_Block $inner_block The inner block.
* @return string Returns the markup for a single inner block.
*/
private static function get_markup_for_inner_block( $inner_block ) {
$inner_block_content = $inner_block->render();
if ( ! empty( $inner_block_content ) ) {
if ( static::does_block_need_a_list_item_wrapper( $inner_block ) ) {
return '<li class="wp-block-navigation-item">' . $inner_block_content . '</li>';
}
}
return $inner_block_content;
}
/**
* Returns the html for the inner blocks of the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return string Returns the html for the inner blocks of the navigation block.
*/
private static function get_inner_blocks_html( $attributes, $inner_blocks ) {
$has_submenus = static::has_submenus( $inner_blocks );
$is_interactive = static::is_interactive( $attributes, $inner_blocks );
$style = static::get_styles( $attributes );
$class = static::get_classes( $attributes );
$container_attributes = get_block_wrapper_attributes(
array(
'class' => 'wp-block-navigation__container ' . $class,
'style' => $style,
)
);
$inner_blocks_html = '';
$is_list_open = false;
foreach ( $inner_blocks as $inner_block ) {
$inner_block_markup = static::get_markup_for_inner_block( $inner_block );
$p = new WP_HTML_Tag_Processor( $inner_block_markup );
$is_list_item = $p->next_tag( 'LI' );
if ( $is_list_item && ! $is_list_open ) {
$is_list_open = true;
$inner_blocks_html .= sprintf(
'<ul %1$s>',
$container_attributes
);
}
if ( ! $is_list_item && $is_list_open ) {
$is_list_open = false;
$inner_blocks_html .= '</ul>';
}
$inner_blocks_html .= $inner_block_markup;
}
if ( $is_list_open ) {
$inner_blocks_html .= '</ul>';
}
// Add directives to the submenu if needed.
if ( $has_submenus && $is_interactive ) {
$tags = new WP_HTML_Tag_Processor( $inner_blocks_html );
$inner_blocks_html = block_core_navigation_add_directives_to_submenu( $tags, $attributes );
}
return $inner_blocks_html;
}
/**
* Gets the inner blocks for the navigation block from the navigation post.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks_from_navigation_post( $attributes ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return new WP_Block_List( array(), $attributes );
}
// 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 ) {
$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.
$blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
// Re-serialize, and run Block Hooks algorithm to inject hooked blocks.
// TODO: See if we can move the apply_block_hooks_to_content_from_post_object() call
// before the parse_blocks() call further above, to avoid the extra serialization/parsing.
$markup = serialize_blocks( $blocks );
$markup = apply_block_hooks_to_content_from_post_object( $markup, $navigation_post );
$blocks = parse_blocks( $markup );
// TODO - this uses the full navigation block attributes for the
// context which could be refined.
return new WP_Block_List( $blocks, $attributes );
}
}
/**
* Gets the inner blocks for the navigation block from the fallback.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks_from_fallback( $attributes ) {
$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 new WP_Block_List( array(), $attributes );
}
return new WP_Block_List( $fallback_blocks, $attributes );
}
/**
* Gets the inner blocks for the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block $block The parsed block.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks( $attributes, $block ) {
$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'] ) )
) {
$inner_blocks = block_core_navigation_get_inner_blocks_from_unstable_location( $attributes );
}
// Load inner blocks from the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$inner_blocks = static::get_inner_blocks_from_navigation_post( $attributes );
}
// If there are no inner blocks then fallback to rendering an appropriate fallback.
if ( empty( $inner_blocks ) ) {
$inner_blocks = static::get_inner_blocks_from_fallback( $attributes );
}
/**
* 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 );
$post_ids = block_core_navigation_get_post_ids( $inner_blocks );
if ( $post_ids ) {
_prime_post_caches( $post_ids, false, false );
}
return $inner_blocks;
}
/**
* Gets the name of the current navigation, if it has one.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return string Returns the name of the navigation.
*/
private static function get_navigation_name( $attributes ) {
$navigation_name = $attributes['ariaLabel'] ?? '';
if ( ! empty( $navigation_name ) ) {
return $navigation_name;
}
// Load the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return $navigation_name;
}
// 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 ) {
$navigation_name = $navigation_post->post_title;
// This is used to count the number of times a navigation name has been seen,
// so that we can ensure every navigation has a unique id.
if ( isset( static::$seen_menu_names[ $navigation_name ] ) ) {
++static::$seen_menu_names[ $navigation_name ];
} else {
static::$seen_menu_names[ $navigation_name ] = 1;
}
}
}
return $navigation_name;
}
/**
* Returns the layout class for the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return string Returns the layout class for the navigation block.
*/
private static function get_layout_class( $attributes ) {
$layout_justification = array(
'left' => 'items-justified-left',
'right' => 'items-justified-right',
'center' => 'items-justified-center',
'space-between' => 'items-justified-space-between',
);
$layout_class = '';
if (
isset( $attributes['layout']['justifyContent'] ) &&
isset( $layout_justification[ $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';
}
return $layout_class;
}
/**
* Return classes for the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return string Returns the classes for the navigation block.
*/
private static function get_classes( $attributes ) {
// Restore legacy classnames for submenu positioning.
$layout_class = static::get_layout_class( $attributes );
$colors = block_core_navigation_build_css_colors( $attributes );
$font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
$is_responsive_menu = static::is_responsive( $attributes );
// Manually add block support text decoration as CSS class.
$text_decoration = $attributes['style']['typography']['textDecoration'] ?? null;
$text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );
$classes = array_merge(
$colors['css_classes'],
$font_sizes['css_classes'],
$is_responsive_menu ? array( 'is-responsive' ) : array(),
$layout_class ? array( $layout_class ) : array(),
$text_decoration ? array( $text_decoration_class ) : array()
);
return implode( ' ', $classes );
}
/**
* Get styles for the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return string Returns the styles for the navigation block.
*/
private static function get_styles( $attributes ) {
$colors = block_core_navigation_build_css_colors( $attributes );
$font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
$block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : '';
return $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'];
}
/**
* Get the responsive container markup
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @param string $inner_blocks_html The markup for the inner blocks.
* @return string Returns the container markup.
*/
private static function get_responsive_container_markup( $attributes, $inner_blocks, $inner_blocks_html ) {
$is_interactive = static::is_interactive( $attributes, $inner_blocks );
$colors = block_core_navigation_build_css_colors( $attributes );
$modal_unique_id = wp_unique_id( 'modal-' );
$is_hidden_by_default = isset( $attributes['overlayMenu'] ) && 'always' === $attributes['overlayMenu'];
$responsive_container_classes = array(
'wp-block-navigation__responsive-container',
$is_hidden_by_default ? 'hidden-by-default' : '',
implode( ' ', $colors['overlay_css_classes'] ),
);
$open_button_classes = array(
'wp-block-navigation__responsive-container-open',
$is_hidden_by_default ? 'always-shown' : '',
);
$should_display_icon_label = isset( $attributes['hasIcon'] ) && true === $attributes['hasIcon'];
$toggle_button_icon = '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M4 7.5h16v1.5H4z"></path><path d="M4 15h16v1.5H4z"></path></svg>';
if ( isset( $attributes['icon'] ) ) {
if ( 'menu' === $attributes['icon'] ) {
$toggle_button_icon = '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M5 5v1.5h14V5H5z"></path><path d="M5 12.8h14v-1.5H5v1.5z"></path><path d="M5 19h14v-1.5H5V19z"></path></svg>';
}
}
$toggle_button_content = $should_display_icon_label ? $toggle_button_icon : __( 'Menu' );
$toggle_close_button_icon = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" aria-hidden="true" focusable="false"><path d="m13.06 12 6.47-6.47-1.06-1.06L12 10.94 5.53 4.47 4.47 5.53 10.94 12l-6.47 6.47 1.06 1.06L12 13.06l6.47 6.47 1.06-1.06L13.06 12Z"></path></svg>';
$toggle_close_button_content = $should_display_icon_label ? $toggle_close_button_icon : __( 'Close' );
$toggle_aria_label_open = $should_display_icon_label ? 'aria-label="' . __( 'Open menu' ) . '"' : ''; // Open button label.
$toggle_aria_label_close = $should_display_icon_label ? 'aria-label="' . __( 'Close menu' ) . '"' : ''; // Close button label.
// Add Interactivity API directives to the markup if needed.
$open_button_directives = '';
$responsive_container_directives = '';
$responsive_dialog_directives = '';
$close_button_directives = '';
if ( $is_interactive ) {
$open_button_directives = '
data-wp-on--click="actions.openMenuOnClick"
data-wp-on--keydown="actions.handleMenuKeydown"
';
$responsive_container_directives = '
data-wp-class--has-modal-open="state.isMenuOpen"
data-wp-class--is-menu-open="state.isMenuOpen"
data-wp-watch="callbacks.initMenu"
data-wp-on--keydown="actions.handleMenuKeydown"
data-wp-on--focusout="actions.handleMenuFocusout"
tabindex="-1"
';
$responsive_dialog_directives = '
data-wp-bind--aria-modal="state.ariaModal"
data-wp-bind--aria-label="state.ariaLabel"
data-wp-bind--role="state.roleAttribute"
';
$close_button_directives = '
data-wp-on--click="actions.closeMenuOnClick"
';
$responsive_container_content_directives = '
data-wp-watch="callbacks.focusFirstElement"
';
}
$overlay_inline_styles = esc_attr( safecss_filter_attr( $colors['overlay_inline_styles'] ) );
return sprintf(
'<button aria-haspopup="dialog" %3$s class="%6$s" %10$s>%8$s</button>
<div class="%5$s" %7$s id="%1$s" %11$s>
<div class="wp-block-navigation__responsive-close" tabindex="-1">
<div class="wp-block-navigation__responsive-dialog" %12$s>
<button %4$s class="wp-block-navigation__responsive-container-close" %13$s>%9$s</button>
<div class="wp-block-navigation__responsive-container-content" %14$s id="%1$s-content">
%2$s
</div>
</div>
</div>
</div>',
esc_attr( $modal_unique_id ),
$inner_blocks_html,
$toggle_aria_label_open,
$toggle_aria_label_close,
esc_attr( trim( implode( ' ', $responsive_container_classes ) ) ),
esc_attr( trim( implode( ' ', $open_button_classes ) ) ),
( ! empty( $overlay_inline_styles ) ) ? "style=\"$overlay_inline_styles\"" : '',
$toggle_button_content,
$toggle_close_button_content,
$open_button_directives,
$responsive_container_directives,
$responsive_dialog_directives,
$close_button_directives,
$responsive_container_content_directives
);
}
/**
* Get the wrapper attributes
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks A list of inner blocks.
* @return string Returns the navigation block markup.
*/
private static function get_nav_wrapper_attributes( $attributes, $inner_blocks ) {
$nav_menu_name = static::get_unique_navigation_name( $attributes );
$is_interactive = static::is_interactive( $attributes, $inner_blocks );
$is_responsive_menu = static::is_responsive( $attributes );
$style = static::get_styles( $attributes );
$class = static::get_classes( $attributes );
$extra_attributes = array(
'class' => $class,
'style' => $style,
);
if ( ! empty( $nav_menu_name ) ) {
$extra_attributes['aria-label'] = $nav_menu_name;
}
$wrapper_attributes = get_block_wrapper_attributes( $extra_attributes );
if ( $is_responsive_menu ) {
$nav_element_directives = static::get_nav_element_directives( $is_interactive );
$wrapper_attributes .= ' ' . $nav_element_directives;
}
return $wrapper_attributes;
}
/**
* Gets the nav element directives.
*
* @since 6.5.0
*
* @param bool $is_interactive Whether the block is interactive.
* @return string the directives for the navigation element.
*/
private static function get_nav_element_directives( $is_interactive ) {
if ( ! $is_interactive ) {
return '';
}
// When adding to this array be mindful of security concerns.
$nav_element_context = wp_interactivity_data_wp_context(
array(
'overlayOpenedBy' => array(
'click' => false,
'hover' => false,
'focus' => false,
),
'type' => 'overlay',
'roleAttribute' => '',
'ariaLabel' => __( 'Menu' ),
)
);
$nav_element_directives = '
data-wp-interactive="core/navigation" '
. $nav_element_context;
return $nav_element_directives;
}
/**
* Handle view script module loading.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block $block The parsed block.
* @param WP_Block_List $inner_blocks The list of inner blocks.
*/
private static function handle_view_script_module_loading( $attributes, $block, $inner_blocks ) {
if ( static::is_interactive( $attributes, $inner_blocks ) ) {
wp_enqueue_script_module( '@wordpress/block-library/navigation/view' );
}
}
/**
* Returns the markup for the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return string Returns the navigation wrapper markup.
*/
private static function get_wrapper_markup( $attributes, $inner_blocks ) {
$inner_blocks_html = static::get_inner_blocks_html( $attributes, $inner_blocks );
if ( static::is_responsive( $attributes ) ) {
return static::get_responsive_container_markup( $attributes, $inner_blocks, $inner_blocks_html );
}
return $inner_blocks_html;
}
/**
* Returns a unique name for the navigation.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return string Returns a unique name for the navigation.
*/
private static function get_unique_navigation_name( $attributes ) {
$nav_menu_name = static::get_navigation_name( $attributes );
// If the menu name has been used previously then append an ID
// to the name to ensure uniqueness across a given post.
if ( isset( static::$seen_menu_names[ $nav_menu_name ] ) && static::$seen_menu_names[ $nav_menu_name ] > 1 ) {
$count = static::$seen_menu_names[ $nav_menu_name ];
$nav_menu_name = $nav_menu_name . ' ' . ( $count );
}
return $nav_menu_name;
}
/**
* Renders the navigation block.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @param string $content The saved content.
* @param WP_Block $block The parsed block.
* @return string Returns the navigation block markup.
*/
public static function render( $attributes, $content, $block ) {
/**
* 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'] );
$inner_blocks = static::get_inner_blocks( $attributes, $block );
// Prevent navigation blocks referencing themselves from rendering.
if ( block_core_navigation_block_contains_core_navigation( $inner_blocks ) ) {
return '';
}
static::handle_view_script_module_loading( $attributes, $block, $inner_blocks );
return sprintf(
'<nav %1$s>%2$s</nav>',
static::get_nav_wrapper_attributes( $attributes, $inner_blocks ),
static::get_wrapper_markup( $attributes, $inner_blocks )
);
}
}
// These functions are used for the __unstableLocation feature and only active
// when the gutenberg plugin is active.
if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN ) {
/**
* Returns the menu items for a WordPress menu location.
*
* @since 5.9.0
*
* @param string $location The menu location.
* @return array Menu items for the location.
*/
function block_core_navigation_get_menu_items_at_location( $location ) {
if ( empty( $location ) ) {
return;
}
// Build menu data. The following approximates the code in
// `wp_nav_menu()` and `gutenberg_output_block_nav_menu`.
// Find the location in the list of locations, returning early if the
// location can't be found.
$locations = get_nav_menu_locations();
if ( ! isset( $locations[ $location ] ) ) {
return;
}
// Get the menu from the location, returning early if there is no
// menu or there was an error.
$menu = wp_get_nav_menu_object( $locations[ $location ] );
if ( ! $menu || is_wp_error( $menu ) ) {
return;
}
$menu_items = wp_get_nav_menu_items( $menu->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.
*
* @since 5.9.0
*
* @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;
}
/**
* Gets the inner blocks for the navigation block from the unstable location attribute.
*
* @since 6.5.0
*
* @param array $attributes The block attributes.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
function block_core_navigation_get_inner_blocks_from_unstable_location( $attributes ) {
$menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] );
if ( empty( $menu_items ) ) {
return new WP_Block_List( array(), $attributes );
}
$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 );
return new WP_Block_List( $parsed_blocks, $attributes );
}
}
/**
* Add Interactivity API directives to the navigation-submenu and page-list
* blocks markup using the Tag Processor.
*
* @since 6.3.0
*
* @param WP_HTML_Tag_Processor $tags Markup of the navigation block.
* @param array $block_attributes Block attributes.
*
* @return string Submenu markup with the directives injected.
*/
function block_core_navigation_add_directives_to_submenu( $tags, $block_attributes ) {
while ( $tags->next_tag(
array(
'tag_name' => 'LI',
'class_name' => 'has-child',
)
) ) {
// Add directives to the parent `<li>`.
$tags->set_attribute( 'data-wp-interactive', 'core/navigation' );
$tags->set_attribute( 'data-wp-context', '{ "submenuOpenedBy": { "click": false, "hover": false, "focus": false }, "type": "submenu", "modal": null, "previousFocus": null }' );
$tags->set_attribute( 'data-wp-watch', 'callbacks.initMenu' );
$tags->set_attribute( 'data-wp-on--focusout', 'actions.handleMenuFocusout' );
$tags->set_attribute( 'data-wp-on--keydown', 'actions.handleMenuKeydown' );
// This is a fix for Safari. Without it, Safari doesn't change the active
// element when the user clicks on a button. It can be removed once we add
// an overlay to capture the clicks, instead of relying on the focusout
// event.
$tags->set_attribute( 'tabindex', '-1' );
if ( ! isset( $block_attributes['openSubmenusOnClick'] ) || false === $block_attributes['openSubmenusOnClick'] ) {
$tags->set_attribute( 'data-wp-on--mouseenter', 'actions.openMenuOnHover' );
$tags->set_attribute( 'data-wp-on--mouseleave', 'actions.closeMenuOnHover' );
}
// Add directives to the toggle submenu button.
if ( $tags->next_tag(
array(
'tag_name' => 'BUTTON',
'class_name' => 'wp-block-navigation-submenu__toggle',
)
) ) {
$tags->set_attribute( 'data-wp-on--click', 'actions.toggleMenuOnClick' );
$tags->set_attribute( 'data-wp-bind--aria-expanded', 'state.isMenuOpen' );
// The `aria-expanded` attribute for SSR is already added in the submenu block.
}
// Add directives to the submenu.
if ( $tags->next_tag(
array(
'tag_name' => 'UL',
'class_name' => 'wp-block-navigation__submenu-container',
)
) ) {
$tags->set_attribute( 'data-wp-on--focus', 'actions.openMenuOnFocus' );
}
// Iterate through subitems if exist.
block_core_navigation_add_directives_to_submenu( $tags, $block_attributes );
}
return $tags->get_updated_html();
}
/**
* Build an array with CSS classes and inline styles defining the colors
* which will be applied to the navigation markup in the front-end.
*
* @since 5.9.0
*
* @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.
*
* @since 5.9.0
*
* @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.
*
* @since 5.9.0
*
* @return string
*/
function block_core_navigation_render_submenu_icon() {
return '<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg>';
}
/**
* 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.
*
* @since 5.9.0
*
* @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,
static function ( $block ) {
return isset( $block['blockName'] );
}
);
// Reset keys.
return array_values( $filtered );
}
/**
* Returns true if the navigation block contains a nested navigation block.
*
* @since 6.2.0
*
* @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.
*
* @since 5.9.0
*
* @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',
'innerContent' => array(),
'attrs' => array(),
),
);
$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();
$navigation_post = WP_Navigation_Fallback::get_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;
// Run Block Hooks algorithm to inject hooked blocks.
// We have to run it here because we need the post ID of the Navigation block to track ignored hooked blocks.
// TODO: See if we can move the apply_block_hooks_to_content_from_post_object() call
// before the parse_blocks() call further above, to avoid the extra serialization/parsing.
$markup = serialize_blocks( $fallback_blocks );
$markup = apply_block_hooks_to_content_from_post_object( $markup, $navigation_post );
$fallback_blocks = parse_blocks( $markup );
}
/**
* 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[] $fallback_blocks 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.
*
* @since 6.0.0
*
* @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.
*
* @since 6.0.0
*
* @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.
*
* @since 5.9.0
*
* @param array $attributes The block attributes.
* @param string $content The saved content.
* @param WP_Block $block The parsed block.
*
* @return string Returns the navigation block markup.
*/
function render_block_core_navigation( $attributes, $content, $block ) {
return WP_Navigation_Block_Renderer::render( $attributes, $content, $block );
}
/**
* Register the navigation block.
*
* @since 5.9.0
*
* @uses render_block_core_navigation()
* @throws WP_Error An WP_Error exception parsing the block definition.
*/
function register_block_core_navigation() {
register_block_type_from_metadata(
__DIR__ . '/navigation',
array(
'render_callback' => 'render_block_core_navigation',
)
);
}
add_action( 'init', 'register_block_core_navigation' );
/**
* Filter that changes the parsed attribute values of navigation blocks contain typographic presets to contain the values directly.
*
* @since 5.9.0
*
* @param array $parsed_block The block being rendered.
*
* @return array The block being rendered without typographic presets.
*/
function block_core_navigation_typographic_presets_backcompatibility( $parsed_block ) {
if ( 'core/navigation' === $parsed_block['blockName'] ) {
$attribute_to_prefix_map = array(
'fontStyle' => 'var:preset|font-style|',
'fontWeight' => 'var:preset|font-weight|',
'textDecoration' => 'var:preset|text-decoration|',
'textTransform' => 'var:preset|text-transform|',
);
foreach ( $attribute_to_prefix_map as $style_attribute => $prefix ) {
if ( ! empty( $parsed_block['attrs']['style']['typography'][ $style_attribute ] ) ) {
$prefix_len = strlen( $prefix );
$attribute_value = &$parsed_block['attrs']['style']['typography'][ $style_attribute ];
if ( 0 === strncmp( $attribute_value, $prefix, $prefix_len ) ) {
$attribute_value = substr( $attribute_value, $prefix_len );
}
if ( 'textDecoration' === $style_attribute && 'strikethrough' === $attribute_value ) {
$attribute_value = 'line-through';
}
}
}
}
return $parsed_block;
}
add_filter( 'render_block_data', 'block_core_navigation_typographic_presets_backcompatibility' );
/**
* Turns menu item data into a nested array of parsed blocks
*
* @since 5.9.0
*
* @deprecated 6.3.0 Use WP_Navigation_Fallback::parse_blocks_from_menu_items() instead.
*
* @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 ) {
_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Navigation_Fallback::parse_blocks_from_menu_items' );
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;
}
/**
* Get the classic navigation menu to use as a fallback.
*
* @since 6.2.0
*
* @deprecated 6.3.0 Use WP_Navigation_Fallback::get_classic_menu_fallback() instead.
*
* @return object WP_Term The classic navigation.
*/
function block_core_navigation_get_classic_menu_fallback() {
_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Navigation_Fallback::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,
static function ( $a, $b ) {
return $b->term_id - $a->term_id;
}
);
return $classic_nav_menus[0];
}
}
/**
* Converts a classic navigation to blocks.
*
* @since 6.2.0
*
* @deprecated 6.3.0 Use WP_Navigation_Fallback::get_classic_menu_fallback_blocks() instead.
*
* @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 ) {
_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Navigation_Fallback::get_classic_menu_fallback_blocks' );
// 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 classic menu then use it as a fallback.
*
* @since 6.2.0
*
* @deprecated 6.3.0 Use WP_Navigation_Fallback::create_classic_menu_fallback() instead.
*
* @return array the normalized parsed blocks.
*/
function block_core_navigation_maybe_use_classic_menu_fallback() {
_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Navigation_Fallback::create_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->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.
);
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.
*
* @since 6.1.0
*
* @deprecated 6.3.0 Use WP_Navigation_Fallback::get_most_recently_published_navigation() instead.
*
* @return WP_Post|null the first non-empty Navigation or null.
*/
function block_core_navigation_get_most_recently_published_navigation() {
_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Navigation_Fallback::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;
}