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navigation-link.php
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<?php /** * Server-side registering and rendering of the `core/navigation-link` block. * * @package WordPress */ // Path differs between source and build: './shared/' in source, './navigation-link/shared/' in build. if ( file_exists( __DIR__ . '/shared/item-should-render.php' ) ) { require_once __DIR__ . '/shared/item-should-render.php'; require_once __DIR__ . '/shared/render-submenu-icon.php'; } else { require_once __DIR__ . '/navigation-link/shared/item-should-render.php'; require_once __DIR__ . '/navigation-link/shared/render-submenu-icon.php'; } /** * 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 $context Navigation block context. * @param array $attributes Block attributes. * @param bool $is_sub_menu Whether the link is part of a sub-menu. Default false. * @return array Colors CSS classes and inline styles. */ function block_core_navigation_link_build_css_colors( $context, $attributes, $is_sub_menu = false ) { $colors = array( 'css_classes' => array(), 'inline_styles' => '', ); // Text color. $named_text_color = null; $custom_text_color = null; if ( $is_sub_menu && array_key_exists( 'customOverlayTextColor', $context ) ) { $custom_text_color = $context['customOverlayTextColor']; } elseif ( $is_sub_menu && array_key_exists( 'overlayTextColor', $context ) ) { $named_text_color = $context['overlayTextColor']; } elseif ( array_key_exists( 'customTextColor', $context ) ) { $custom_text_color = $context['customTextColor']; } elseif ( array_key_exists( 'textColor', $context ) ) { $named_text_color = $context['textColor']; } elseif ( isset( $context['style']['color']['text'] ) ) { $custom_text_color = $context['style']['color']['text']; } // If has text color. if ( ! is_null( $named_text_color ) ) { // Add the color class. array_push( $colors['css_classes'], 'has-text-color', sprintf( 'has-%s-color', $named_text_color ) ); } elseif ( ! is_null( $custom_text_color ) ) { // Add the custom color inline style. $colors['css_classes'][] = 'has-text-color'; $colors['inline_styles'] .= sprintf( 'color: %s;', $custom_text_color ); } // Background color. $named_background_color = null; $custom_background_color = null; if ( $is_sub_menu && array_key_exists( 'customOverlayBackgroundColor', $context ) ) { $custom_background_color = $context['customOverlayBackgroundColor']; } elseif ( $is_sub_menu && array_key_exists( 'overlayBackgroundColor', $context ) ) { $named_background_color = $context['overlayBackgroundColor']; } elseif ( array_key_exists( 'customBackgroundColor', $context ) ) { $custom_background_color = $context['customBackgroundColor']; } elseif ( array_key_exists( 'backgroundColor', $context ) ) { $named_background_color = $context['backgroundColor']; } elseif ( isset( $context['style']['color']['background'] ) ) { $custom_background_color = $context['style']['color']['background']; } // If has background color. if ( ! is_null( $named_background_color ) ) { // Add the background-color class. array_push( $colors['css_classes'], 'has-background', sprintf( 'has-%s-background-color', $named_background_color ) ); } elseif ( ! is_null( $custom_background_color ) ) { // Add the custom background-color inline style. $colors['css_classes'][] = 'has-background'; $colors['inline_styles'] .= sprintf( 'background-color: %s;', $custom_background_color ); } 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 $context Navigation block context. * @return array Font size CSS classes and inline styles. */ function block_core_navigation_link_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; } /** * Decodes a url if it's encoded, returning the same url if not. * * @since 6.2.0 * * @param string $url The url to decode. * * @return string $url Returns the decoded url. */ function block_core_navigation_link_maybe_urldecode( $url ) { $is_url_encoded = false; $query = parse_url( $url, PHP_URL_QUERY ); $query_params = wp_parse_args( $query ); foreach ( $query_params as $query_param ) { $can_query_param_be_encoded = is_string( $query_param ) && ! empty( $query_param ); if ( ! $can_query_param_be_encoded ) { continue; } if ( rawurldecode( $query_param ) !== $query_param ) { $is_url_encoded = true; break; } } if ( $is_url_encoded ) { return rawurldecode( $url ); } return $url; } /** * Renders the `core/navigation-link` 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_link( $attributes, $content, $block ) { // Check if this navigation item should render based on post status. if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN ) { if ( ! gutenberg_block_core_shared_navigation_item_should_render( $attributes, $block ) ) { return ''; } } // Don't render the block's subtree if it has no label. if ( empty( $attributes['label'] ) ) { return ''; } $font_sizes = block_core_navigation_link_build_css_font_sizes( $block->context ); $classes = array_merge( $font_sizes['css_classes'] ); $style_attribute = $font_sizes['inline_styles']; // Render inner blocks first to check if any menu items will actually display. $inner_blocks_html = ''; foreach ( $block->inner_blocks as $inner_block ) { $inner_blocks_html .= $inner_block->render(); } $has_submenu = ! empty( trim( $inner_blocks_html ) ); $css_classes = trim( implode( ' ', $classes ) ); $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() && ! empty( $attributes['url'] ) ) { $queried_archive_link = get_post_type_archive_link( get_queried_object()->name ); if ( $attributes['url'] === $queried_archive_link ) { $is_active = true; } } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $css_classes . ' wp-block-navigation-item' . ( $has_submenu ? ' has-child' : '' ) . ( $is_active ? ' current-menu-item' : '' ), 'style' => $style_attribute, ) ); $html = '<li ' . $wrapper_attributes . '>' . '<a class="wp-block-navigation-item__content" '; // Start appending HTML attributes to anchor tag. if ( isset( $attributes['url'] ) ) { $html .= ' href="' . esc_url( block_core_navigation_link_maybe_urldecode( $attributes['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'] ) . '"'; } // End appending HTML attributes to anchor tag. // Start anchor tag content. $html .= '>' . // Wrap title with span to isolate it from submenu icon. '<span class="wp-block-navigation-item__label">'; if ( isset( $attributes['label'] ) ) { $html .= wp_kses_post( $attributes['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 ( isset( $block->context['showSubmenuIcon'] ) && $block->context['showSubmenuIcon'] && $has_submenu ) { // The submenu icon can be hidden by a CSS rule on the Navigation Block. $html .= '<span class="wp-block-navigation__submenu-icon">'; if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN ) { $html .= gutenberg_block_core_shared_navigation_render_submenu_icon(); } else { $html .= block_core_shared_navigation_render_submenu_icon(); } $html .= '</span>'; } if ( $has_submenu ) { $html .= sprintf( '<ul class="wp-block-navigation__submenu-container">%s</ul>', $inner_blocks_html ); } $html .= '</li>'; return $html; } /** * Returns a navigation link variation * * @since 5.9.0 * * @param WP_Taxonomy|WP_Post_Type $entity post type or taxonomy entity. * @param string $kind string of value 'taxonomy' or 'post-type'. * * @return array */ function build_variation_for_navigation_link( $entity, $kind ) { $title = ''; $description = ''; // Get default labels based on entity type $default_labels = null; if ( $entity instanceof WP_Post_Type ) { $default_labels = WP_Post_Type::get_default_labels(); } elseif ( $entity instanceof WP_Taxonomy ) { $default_labels = WP_Taxonomy::get_default_labels(); } // Get title and check if it's default $is_default_title = false; if ( property_exists( $entity->labels, 'item_link' ) ) { $title = $entity->labels->item_link; if ( isset( $default_labels['item_link'] ) ) { $is_default_title = in_array( $title, $default_labels['item_link'], true ); } } // Get description and check if it's default $is_default_description = false; if ( property_exists( $entity->labels, 'item_link_description' ) ) { $description = $entity->labels->item_link_description; if ( isset( $default_labels['item_link_description'] ) ) { $is_default_description = in_array( $description, $default_labels['item_link_description'], true ); } } // Calculate singular name once (used for both title and description) $singular = $entity->labels->singular_name ?? ucfirst( $entity->name ); // Set default title if needed if ( $is_default_title || '' === $title ) { /* translators: %s: Singular label of the entity. */ $title = sprintf( __( '%s link' ), $singular ); } // Default description if needed. // Use a single space character instead of an empty string to prevent fallback to the // block.json default description ("Add a page, link, or another item to your navigation."). // An empty string would be treated as missing and trigger the fallback, while a single // space appears blank in the UI but prevents the fallback behavior. // We avoid generating descriptions like "A link to a %s" to prevent grammatical errors // (e.g., "A link to a event" should be "A link to an event"). if ( $is_default_description || '' === $description ) { $description = ' '; } $variation = array( 'name' => $entity->name, 'title' => $title, 'description' => $description, 'attributes' => array( 'type' => $entity->name, 'kind' => $kind, ), ); // Tweak some value for the variations. $variation_overrides = array( 'post_tag' => array( 'name' => 'tag', 'attributes' => array( 'type' => 'tag', 'kind' => $kind, ), ), 'post_format' => array( // The item_link and item_link_description for post formats is the // same as for tags, so need to be overridden. 'title' => __( 'Post Format Link' ), 'description' => __( 'A link to a post format' ), 'attributes' => array( 'type' => 'post_format', 'kind' => $kind, ), ), ); if ( array_key_exists( $entity->name, $variation_overrides ) ) { $variation = array_merge( $variation, $variation_overrides[ $entity->name ] ); } return $variation; } /** * Filters the registered variations for a block type. * Returns the dynamically built variations for all post-types and taxonomies. * * @since 6.5.0 * * @param array $variations Array of registered variations for a block type. * @param WP_Block_Type $block_type The full block type object. * @return array Numerically indexed array of block variations. */ function block_core_navigation_link_filter_variations( $variations, $block_type ) { if ( 'core/navigation-link' !== $block_type->name ) { return $variations; } $generated_variations = block_core_navigation_link_build_variations(); /* * IMPORTANT: Order matters for deduplication. * * The variations returned from this filter are bootstrapped to JavaScript and * processed by the block variations reducer. The reducer uses `getUniqueItemsByName()` * (packages/blocks/src/store/reducer.js:51-57) which keeps the FIRST variation with * a given 'name' and discards later duplicates when processing the array in order. * * By placing generated variations first in `array_merge()`, the improved * labels (e.g., "Product link" instead of generic "Post Link") are processed first * and preserved. The generic incoming variations are then discarded as duplicates. * * Why `array_merge()` instead of manual deduplication? * - Both arrays use numeric indices (0, 1, 2...), so `array_merge()` concatenates * and re-indexes them sequentially, preserving order * - The reducer handles deduplication, so it is not needed here * - This keeps the PHP code simple and relies on the established JavaScript behavior * * See: https://github.com/WordPress/gutenberg/pull/72517 */ return array_merge( $generated_variations, $variations ); } /** * Returns an array of variations for the navigation link block. * * @since 6.5.0 * * @return array */ function block_core_navigation_link_build_variations() { $post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'objects' ); $taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'objects' ); /* * Use two separate arrays as a way to order the variations in the UI. * Known variations (like Post Link and Page Link) are added to the * `built_ins` array. Variations for custom post types and taxonomies are * added to the `variations` array and will always appear after `built-ins. */ $built_ins = array(); $variations = array(); if ( $post_types ) { foreach ( $post_types as $post_type ) { $variation = build_variation_for_navigation_link( $post_type, 'post-type' ); if ( $post_type->_builtin ) { $built_ins[] = $variation; } else { $variations[] = $variation; } } } if ( $taxonomies ) { foreach ( $taxonomies as $taxonomy ) { $variation = build_variation_for_navigation_link( $taxonomy, 'taxonomy' ); if ( $taxonomy->_builtin ) { $built_ins[] = $variation; } else { $variations[] = $variation; } } } $all_variations = array_merge( $built_ins, $variations ); return $all_variations; } /** * Registers the navigation link block. * * @since 5.9.0 * * @uses render_block_core_navigation_link() * @throws WP_Error An WP_Error exception parsing the block definition. */ function register_block_core_navigation_link() { register_block_type_from_metadata( __DIR__ . '/navigation-link', array( 'render_callback' => 'render_block_core_navigation_link', ) ); } add_action( 'init', 'register_block_core_navigation_link' ); /** * Creates all variations for post types / taxonomies dynamically (= each time when variations are requested). * Do not use variation_callback, to also account for unregistering post types/taxonomies later on. */ add_action( 'get_block_type_variations', 'block_core_navigation_link_filter_variations', 10, 2 );