File Content: navigation-submenu.php <?php /** * Server-side rendering of the `core/navigation-submenu` block. * * @package WordPress */ /** * 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 $context Navigation block context. * @return array Font size CSS classes and inline styles. */ function block_core_navigation_submenu_build_css_font_sizes( $context ) { // CSS classes. $font_sizes = array( 'css_classes' => array(), 'inline_styles' => '', ); $has_named_font_size = array_key_exists( 'fontSize', $context ); $has_custom_font_size = isset( $context['style']['typography']['fontSize'] ); if ( $has_named_font_size ) { // Add the font size class. $font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $context['fontSize'] ); } elseif ( $has_custom_font_size ) { // Add the custom font size inline style. $font_sizes['inline_styles'] = sprintf( 'font-size: %s;', wp_get_typography_font_size_value( array( 'size' => $context['style']['typography']['fontSize'], ) ) ); } return $font_sizes; } /** * Returns the top-level submenu SVG chevron icon. * * @since 5.9.0 * * @return string */ function block_core_navigation_submenu_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>'; } /** * Renders the `core/navigation-submenu` block. * * @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 post content with the legacy widget added. */ function render_block_core_navigation_submenu( $attributes, $content, $block ) { $navigation_link_has_id = isset( $attributes['id'] ) && is_numeric( $attributes['id'] ); $is_post_type = isset( $attributes['kind'] ) && 'post-type' === $attributes['kind']; $is_post_type = $is_post_type || isset( $attributes['type'] ) && ( 'post' === $attributes['type'] || 'page' === $attributes['type'] ); // Don't render the block's subtree if it is a draft. if ( $is_post_type && $navigation_link_has_id && 'publish' !== get_post_status( $attributes['id'] ) ) { return ''; } // Don't render the block's subtree if it has no label. if ( empty( $attributes['label'] ) ) { return ''; } $font_sizes = block_core_navigation_submenu_build_css_font_sizes( $block->context ); $style_attribute = $font_sizes['inline_styles']; $has_submenu = count( $block->inner_blocks ) > 0; $kind = empty( $attributes['kind'] ) ? 'post_type' : str_replace( '-', '_', $attributes['kind'] ); $is_active = ! empty( $attributes['id'] ) && get_queried_object_id() === (int) $attributes['id'] && ! empty( get_queried_object()->$kind ); if ( is_post_type_archive() ) { $queried_archive_link = get_post_type_archive_link( get_queried_object()->name ); if ( $attributes['url'] === $queried_archive_link ) { $is_active = true; } } $show_submenu_indicators = isset( $block->context['showSubmenuIcon'] ) && $block->context['showSubmenuIcon']; $open_on_click = isset( $block->context['openSubmenusOnClick'] ) && $block->context['openSubmenusOnClick']; $open_on_hover_and_click = isset( $block->context['openSubmenusOnClick'] ) && ! $block->context['openSubmenusOnClick'] && $show_submenu_indicators; $classes = array( 'wp-block-navigation-item', ); $classes = array_merge( $classes, $font_sizes['css_classes'] ); if ( $has_submenu ) { $classes[] = 'has-child'; } if ( $open_on_click ) { $classes[] = 'open-on-click'; } if ( $open_on_hover_and_click ) { $classes[] = 'open-on-hover-click'; } if ( $is_active ) { $classes[] = 'current-menu-item'; } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ), 'style' => $style_attribute, ) ); $label = ''; if ( isset( $attributes['label'] ) ) { $label .= wp_kses_post( $attributes['label'] ); } $aria_label = sprintf( /* translators: Accessibility text. %s: Parent page title. */ __( '%s submenu' ), wp_strip_all_tags( $label ) ); $html = '<li ' . $wrapper_attributes . '>'; // If Submenus open on hover, we render an anchor tag with attributes. // If submenu icons are set to show, we also render a submenu button, so the submenu can be opened on click. if ( ! $open_on_click ) { $item_url = isset( $attributes['url'] ) ? $attributes['url'] : ''; // Start appending HTML attributes to anchor tag. $html .= '<a class="wp-block-navigation-item__content"'; // The href attribute on a and area elements is not required; // when those elements do not have href attributes they do not create hyperlinks. // But also The href attribute must have a value that is a valid URL potentially // surrounded by spaces. // see: https://html.spec.whatwg.org/multipage/links.html#links-created-by-a-and-area-elements. if ( ! empty( $item_url ) ) { $html .= ' href="' . esc_url( $item_url ) . '"'; } if ( $is_active ) { $html .= ' aria-current="page"'; } if ( isset( $attributes['opensInNewTab'] ) && true === $attributes['opensInNewTab'] ) { $html .= ' target="_blank" '; } if ( isset( $attributes['rel'] ) ) { $html .= ' rel="' . esc_attr( $attributes['rel'] ) . '"'; } elseif ( isset( $attributes['nofollow'] ) && $attributes['nofollow'] ) { $html .= ' rel="nofollow"'; } if ( isset( $attributes['title'] ) ) { $html .= ' title="' . esc_attr( $attributes['title'] ) . '"'; } $html .= '>'; // End appending HTML attributes to anchor tag. $html .= '<span class="wp-block-navigation-item__label">'; $html .= $label; $html .= '</span>'; // Add description if available. if ( ! empty( $attributes['description'] ) ) { $html .= '<span class="wp-block-navigation-item__description">'; $html .= wp_kses_post( $attributes['description'] ); $html .= '</span>'; } $html .= '</a>'; // End anchor tag content. if ( $show_submenu_indicators ) { // The submenu icon is rendered in a button here // so that there's a clickable element to open the submenu. $html .= '<button aria-label="' . esc_attr( $aria_label ) . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">' . block_core_navigation_submenu_render_submenu_icon() . '</button>'; } } else { // If menus open on click, we render the parent as a button. $html .= '<button aria-label="' . esc_attr( $aria_label ) . '" class="wp-block-navigation-item__content wp-block-navigation-submenu__toggle" aria-expanded="false">'; // Wrap title with span to isolate it from submenu icon. $html .= '<span class="wp-block-navigation-item__label">'; $html .= $label; $html .= '</span>'; // Add description if available. if ( ! empty( $attributes['description'] ) ) { $html .= '<span class="wp-block-navigation-item__description">'; $html .= wp_kses_post( $attributes['description'] ); $html .= '</span>'; } $html .= '</button>'; $html .= '<span class="wp-block-navigation__submenu-icon">' . block_core_navigation_submenu_render_submenu_icon() . '</span>'; } if ( $has_submenu ) { // Copy some attributes from the parent block to this one. // Ideally this would happen in the client when the block is created. if ( array_key_exists( 'overlayTextColor', $block->context ) ) { $attributes['textColor'] = $block->context['overlayTextColor']; } if ( array_key_exists( 'overlayBackgroundColor', $block->context ) ) { $attributes['backgroundColor'] = $block->context['overlayBackgroundColor']; } if ( array_key_exists( 'customOverlayTextColor', $block->context ) ) { $attributes['style']['color']['text'] = $block->context['customOverlayTextColor']; } if ( array_key_exists( 'customOverlayBackgroundColor', $block->context ) ) { $attributes['style']['color']['background'] = $block->context['customOverlayBackgroundColor']; } // This allows us to be able to get a response from wp_apply_colors_support. $block->block_type->supports['color'] = true; $colors_supports = wp_apply_colors_support( $block->block_type, $attributes ); $css_classes = 'wp-block-navigation__submenu-container'; if ( array_key_exists( 'class', $colors_supports ) ) { $css_classes .= ' ' . $colors_supports['class']; } $style_attribute = ''; if ( array_key_exists( 'style', $colors_supports ) ) { $style_attribute = $colors_supports['style']; } $inner_blocks_html = ''; foreach ( $block->inner_blocks as $inner_block ) { $inner_blocks_html .= $inner_block->render(); } if ( strpos( $inner_blocks_html, 'current-menu-item' ) ) { $tag_processor = new WP_HTML_Tag_Processor( $html ); while ( $tag_processor->next_tag( array( 'class_name' => 'wp-block-navigation-item' ) ) ) { $tag_processor->add_class( 'current-menu-ancestor' ); } $html = $tag_processor->get_updated_html(); } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $css_classes, 'style' => $style_attribute, ) ); $html .= sprintf( '<ul %s>%s</ul>', $wrapper_attributes, $inner_blocks_html ); } $html .= '</li>'; return $html; } /** * Register the navigation submenu block. * * @since 5.9.0 * * @uses render_block_core_navigation_submenu() * @throws WP_Error An WP_Error exception parsing the block definition. */ function register_block_core_navigation_submenu() { register_block_type_from_metadata( __DIR__ . '/navigation-submenu', array( 'render_callback' => 'render_block_core_navigation_submenu', ) ); } add_action( 'init', 'register_block_core_navigation_submenu' ); Submit