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/wp-includes/blocks/ -> navigation.php (source)

   1  <?php
   2  /**
   3   * Server-side rendering of the `core/navigation` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  // These functions are used for the __unstableLocation feature and only active
   9  // when the gutenberg plugin is active.
  10  if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN ) {
  11      /**
  12       * Returns the menu items for a WordPress menu location.
  13       *
  14       * @param string $location The menu location.
  15       * @return array Menu items for the location.
  16       */
  17      function block_core_navigation_get_menu_items_at_location( $location ) {
  18          if ( empty( $location ) ) {
  19              return;
  20          }
  21  
  22          // Build menu data. The following approximates the code in
  23          // `wp_nav_menu()` and `gutenberg_output_block_nav_menu`.
  24  
  25          // Find the location in the list of locations, returning early if the
  26          // location can't be found.
  27          $locations = get_nav_menu_locations();
  28          if ( ! isset( $locations[ $location ] ) ) {
  29              return;
  30          }
  31  
  32          // Get the menu from the location, returning early if there is no
  33          // menu or there was an error.
  34          $menu = wp_get_nav_menu_object( $locations[ $location ] );
  35          if ( ! $menu || is_wp_error( $menu ) ) {
  36              return;
  37          }
  38  
  39          $menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) );
  40          _wp_menu_item_classes_by_context( $menu_items );
  41  
  42          return $menu_items;
  43      }
  44  
  45  
  46      /**
  47       * Sorts a standard array of menu items into a nested structure keyed by the
  48       * id of the parent menu.
  49       *
  50       * @param array $menu_items Menu items to sort.
  51       * @return array An array keyed by the id of the parent menu where each element
  52       *               is an array of menu items that belong to that parent.
  53       */
  54      function block_core_navigation_sort_menu_items_by_parent_id( $menu_items ) {
  55          $sorted_menu_items = array();
  56          foreach ( (array) $menu_items as $menu_item ) {
  57              $sorted_menu_items[ $menu_item->menu_order ] = $menu_item;
  58          }
  59          unset( $menu_items, $menu_item );
  60  
  61          $menu_items_by_parent_id = array();
  62          foreach ( $sorted_menu_items as $menu_item ) {
  63              $menu_items_by_parent_id[ $menu_item->menu_item_parent ][] = $menu_item;
  64          }
  65  
  66          return $menu_items_by_parent_id;
  67      }
  68  
  69      /**
  70       * Turns menu item data into a nested array of parsed blocks
  71       *
  72       * @param array $menu_items               An array of menu items that represent
  73       *                                        an individual level of a menu.
  74       * @param array $menu_items_by_parent_id  An array keyed by the id of the
  75       *                                        parent menu where each element is an
  76       *                                        array of menu items that belong to
  77       *                                        that parent.
  78       * @return array An array of parsed block data.
  79       */
  80      function block_core_navigation_parse_blocks_from_menu_items( $menu_items, $menu_items_by_parent_id ) {
  81          if ( empty( $menu_items ) ) {
  82              return array();
  83          }
  84  
  85          $blocks = array();
  86  
  87          foreach ( $menu_items as $menu_item ) {
  88              $class_name       = ! empty( $menu_item->classes ) ? implode( ' ', (array) $menu_item->classes ) : null;
  89              $id               = ( null !== $menu_item->object_id && 'custom' !== $menu_item->object ) ? $menu_item->object_id : null;
  90              $opens_in_new_tab = null !== $menu_item->target && '_blank' === $menu_item->target;
  91              $rel              = ( null !== $menu_item->xfn && '' !== $menu_item->xfn ) ? $menu_item->xfn : null;
  92              $kind             = null !== $menu_item->type ? str_replace( '_', '-', $menu_item->type ) : 'custom';
  93  
  94              $block = array(
  95                  'blockName' => isset( $menu_items_by_parent_id[ $menu_item->ID ] ) ? 'core/navigation-submenu' : 'core/navigation-link',
  96                  'attrs'     => array(
  97                      'className'     => $class_name,
  98                      'description'   => $menu_item->description,
  99                      'id'            => $id,
 100                      'kind'          => $kind,
 101                      'label'         => $menu_item->title,
 102                      'opensInNewTab' => $opens_in_new_tab,
 103                      'rel'           => $rel,
 104                      'title'         => $menu_item->attr_title,
 105                      'type'          => $menu_item->object,
 106                      'url'           => $menu_item->url,
 107                  ),
 108              );
 109  
 110              $block['innerBlocks']  = isset( $menu_items_by_parent_id[ $menu_item->ID ] )
 111                  ? block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[ $menu_item->ID ], $menu_items_by_parent_id )
 112                  : array();
 113              $block['innerContent'] = array_map( 'serialize_block', $block['innerBlocks'] );
 114  
 115              $blocks[] = $block;
 116          }
 117  
 118          return $blocks;
 119      }
 120  }
 121  
 122  /**
 123   * Build an array with CSS classes and inline styles defining the colors
 124   * which will be applied to the navigation markup in the front-end.
 125   *
 126   * @param array $attributes Navigation block attributes.
 127   *
 128   * @return array Colors CSS classes and inline styles.
 129   */
 130  function block_core_navigation_build_css_colors( $attributes ) {
 131      $colors = array(
 132          'css_classes'           => array(),
 133          'inline_styles'         => '',
 134          'overlay_css_classes'   => array(),
 135          'overlay_inline_styles' => '',
 136      );
 137  
 138      // Text color.
 139      $has_named_text_color  = array_key_exists( 'textColor', $attributes );
 140      $has_custom_text_color = array_key_exists( 'customTextColor', $attributes );
 141  
 142      // If has text color.
 143      if ( $has_custom_text_color || $has_named_text_color ) {
 144          // Add has-text-color class.
 145          $colors['css_classes'][] = 'has-text-color';
 146      }
 147  
 148      if ( $has_named_text_color ) {
 149          // Add the color class.
 150          $colors['css_classes'][] = sprintf( 'has-%s-color', $attributes['textColor'] );
 151      } elseif ( $has_custom_text_color ) {
 152          // Add the custom color inline style.
 153          $colors['inline_styles'] .= sprintf( 'color: %s;', $attributes['customTextColor'] );
 154      }
 155  
 156      // Background color.
 157      $has_named_background_color  = array_key_exists( 'backgroundColor', $attributes );
 158      $has_custom_background_color = array_key_exists( 'customBackgroundColor', $attributes );
 159  
 160      // If has background color.
 161      if ( $has_custom_background_color || $has_named_background_color ) {
 162          // Add has-background class.
 163          $colors['css_classes'][] = 'has-background';
 164      }
 165  
 166      if ( $has_named_background_color ) {
 167          // Add the background-color class.
 168          $colors['css_classes'][] = sprintf( 'has-%s-background-color', $attributes['backgroundColor'] );
 169      } elseif ( $has_custom_background_color ) {
 170          // Add the custom background-color inline style.
 171          $colors['inline_styles'] .= sprintf( 'background-color: %s;', $attributes['customBackgroundColor'] );
 172      }
 173  
 174      // Overlay text color.
 175      $has_named_overlay_text_color  = array_key_exists( 'overlayTextColor', $attributes );
 176      $has_custom_overlay_text_color = array_key_exists( 'customOverlayTextColor', $attributes );
 177  
 178      // If has overlay text color.
 179      if ( $has_custom_overlay_text_color || $has_named_overlay_text_color ) {
 180          // Add has-text-color class.
 181          $colors['overlay_css_classes'][] = 'has-text-color';
 182      }
 183  
 184      if ( $has_named_overlay_text_color ) {
 185          // Add the overlay color class.
 186          $colors['overlay_css_classes'][] = sprintf( 'has-%s-color', $attributes['overlayTextColor'] );
 187      } elseif ( $has_custom_overlay_text_color ) {
 188          // Add the custom overlay color inline style.
 189          $colors['overlay_inline_styles'] .= sprintf( 'color: %s;', $attributes['customOverlayTextColor'] );
 190      }
 191  
 192      // Overlay background color.
 193      $has_named_overlay_background_color  = array_key_exists( 'overlayBackgroundColor', $attributes );
 194      $has_custom_overlay_background_color = array_key_exists( 'customOverlayBackgroundColor', $attributes );
 195  
 196      // If has overlay background color.
 197      if ( $has_custom_overlay_background_color || $has_named_overlay_background_color ) {
 198          // Add has-background class.
 199          $colors['overlay_css_classes'][] = 'has-background';
 200      }
 201  
 202      if ( $has_named_overlay_background_color ) {
 203          // Add the overlay background-color class.
 204          $colors['overlay_css_classes'][] = sprintf( 'has-%s-background-color', $attributes['overlayBackgroundColor'] );
 205      } elseif ( $has_custom_overlay_background_color ) {
 206          // Add the custom overlay background-color inline style.
 207          $colors['overlay_inline_styles'] .= sprintf( 'background-color: %s;', $attributes['customOverlayBackgroundColor'] );
 208      }
 209  
 210      return $colors;
 211  }
 212  
 213  /**
 214   * Build an array with CSS classes and inline styles defining the font sizes
 215   * which will be applied to the navigation markup in the front-end.
 216   *
 217   * @param array $attributes Navigation block attributes.
 218   *
 219   * @return array Font size CSS classes and inline styles.
 220   */
 221  function block_core_navigation_build_css_font_sizes( $attributes ) {
 222      // CSS classes.
 223      $font_sizes = array(
 224          'css_classes'   => array(),
 225          'inline_styles' => '',
 226      );
 227  
 228      $has_named_font_size  = array_key_exists( 'fontSize', $attributes );
 229      $has_custom_font_size = array_key_exists( 'customFontSize', $attributes );
 230  
 231      if ( $has_named_font_size ) {
 232          // Add the font size class.
 233          $font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $attributes['fontSize'] );
 234      } elseif ( $has_custom_font_size ) {
 235          // Add the custom font size inline style.
 236          $font_sizes['inline_styles'] = sprintf( 'font-size: %spx;', $attributes['customFontSize'] );
 237      }
 238  
 239      return $font_sizes;
 240  }
 241  
 242  /**
 243   * Returns the top-level submenu SVG chevron icon.
 244   *
 245   * @return string
 246   */
 247  function block_core_navigation_render_submenu_icon() {
 248      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>';
 249  }
 250  
 251  
 252  /**
 253   * Finds the first non-empty `wp_navigation` Post.
 254   *
 255   * @return WP_Post|null the first non-empty Navigation or null.
 256   */
 257  function block_core_navigation_get_first_non_empty_navigation() {
 258      // Order and orderby args set to mirror those in `wp_get_nav_menus`
 259      // see:
 260      // - https://github.com/WordPress/wordpress-develop/blob/ba943e113d3b31b121f77a2d30aebe14b047c69d/src/wp-includes/nav-menu.php#L613-L619.
 261      // - https://developer.wordpress.org/reference/classes/wp_query/#order-orderby-parameters.
 262      $parsed_args = array(
 263          'post_type'      => 'wp_navigation',
 264          'no_found_rows'  => true,
 265          'order'          => 'ASC',
 266          'orderby'        => 'name',
 267          'post_status'    => 'publish',
 268          'posts_per_page' => 20, // Try the first 20 posts.
 269      );
 270  
 271      $navigation_posts = new WP_Query( $parsed_args );
 272      foreach ( $navigation_posts->posts as $navigation_post ) {
 273          if ( has_blocks( $navigation_post ) ) {
 274              return $navigation_post;
 275          }
 276      }
 277  
 278      return null;
 279  }
 280  
 281  /**
 282   * Filter out empty "null" blocks from the block list.
 283   * 'parse_blocks' includes a null block with '\n\n' as the content when
 284   * it encounters whitespace. This is not a bug but rather how the parser
 285   * is designed.
 286   *
 287   * @param array $parsed_blocks the parsed blocks to be normalized.
 288   * @return array the normalized parsed blocks.
 289   */
 290  function block_core_navigation_filter_out_empty_blocks( $parsed_blocks ) {
 291      $filtered = array_filter(
 292          $parsed_blocks,
 293          function( $block ) {
 294              return isset( $block['blockName'] );
 295          }
 296      );
 297  
 298      // Reset keys.
 299      return array_values( $filtered );
 300  }
 301  
 302  /**
 303   * Retrieves the appropriate fallback to be used on the front of the
 304   * site when there is no menu assigned to the Nav block.
 305   *
 306   * This aims to mirror how the fallback mechanic for wp_nav_menu works.
 307   * See https://developer.wordpress.org/reference/functions/wp_nav_menu/#more-information.
 308   *
 309   * @return array the array of blocks to be used as a fallback.
 310   */
 311  function block_core_navigation_get_fallback_blocks() {
 312      $page_list_fallback = array(
 313          array(
 314              'blockName' => 'core/page-list',
 315              'attrs'     => array(
 316                  '__unstableMaxPages' => 4,
 317              ),
 318          ),
 319      );
 320  
 321      $registry = WP_Block_Type_Registry::get_instance();
 322  
 323      // If `core/page-list` is not registered then return empty blocks.
 324      $fallback_blocks = $registry->is_registered( 'core/page-list' ) ? $page_list_fallback : array();
 325  
 326      // Default to a list of Pages.
 327  
 328      $navigation_post = block_core_navigation_get_first_non_empty_navigation();
 329  
 330      // Prefer using the first non-empty Navigation as fallback if available.
 331      if ( $navigation_post ) {
 332          $maybe_fallback = block_core_navigation_filter_out_empty_blocks( parse_blocks( $navigation_post->post_content ) );
 333  
 334          // Normalizing blocks may result in an empty array of blocks if they were all `null` blocks.
 335          // In this case default to the (Page List) fallback.
 336          $fallback_blocks = ! empty( $maybe_fallback ) ? $maybe_fallback : $fallback_blocks;
 337      }
 338  
 339      /**
 340       * Filters the fallback experience for the Navigation block.
 341       *
 342       * Returning a falsey value will opt out of the fallback and cause the block not to render.
 343       * To customise the blocks provided return an array of blocks - these should be valid
 344       * children of the `core/navigation` block.
 345       *
 346       * @since 5.9.0
 347       *
 348       * @param array[] default fallback blocks provided by the default block mechanic.
 349       */
 350      return apply_filters( 'block_core_navigation_render_fallback', $fallback_blocks );
 351  }
 352  
 353  /**
 354   * Renders the `core/navigation` block on server.
 355   *
 356   * @param array    $attributes The block attributes.
 357   * @param string   $content    The saved content.
 358   * @param WP_Block $block      The parsed block.
 359   *
 360   * @return string Returns the post content with the legacy widget added.
 361   */
 362  function render_block_core_navigation( $attributes, $content, $block ) {
 363  
 364      static $seen_menu_names = array();
 365  
 366      // Flag used to indicate whether the rendered output is considered to be
 367      // a fallback (i.e. the block has no menu associated with it).
 368      $is_fallback = false;
 369  
 370      $nav_menu_name = '';
 371  
 372      /**
 373       * Deprecated:
 374       * The rgbTextColor and rgbBackgroundColor attributes
 375       * have been deprecated in favor of
 376       * customTextColor and customBackgroundColor ones.
 377       * Move the values from old attrs to the new ones.
 378       */
 379      if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) {
 380          $attributes['customTextColor'] = $attributes['rgbTextColor'];
 381      }
 382  
 383      if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) {
 384          $attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor'];
 385      }
 386  
 387      unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] );
 388  
 389      /**
 390       * This is for backwards compatibility after `isResponsive` attribute has been removed.
 391       */
 392      $has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
 393      $is_responsive_menu           = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
 394      $should_load_view_script      = ! wp_script_is( 'wp-block-navigation-view' ) && ( $is_responsive_menu || $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] );
 395      if ( $should_load_view_script ) {
 396          wp_enqueue_script( 'wp-block-navigation-view' );
 397      }
 398  
 399      $inner_blocks = $block->inner_blocks;
 400  
 401      // Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render.
 402      if ( array_key_exists( 'navigationMenuId', $attributes ) ) {
 403          $attributes['ref'] = $attributes['navigationMenuId'];
 404      }
 405  
 406      // If:
 407      // - the gutenberg plugin is active
 408      // - `__unstableLocation` is defined
 409      // - we have menu items at the defined location
 410      // - we don't have a relationship to a `wp_navigation` Post (via `ref`).
 411      // ...then create inner blocks from the classic menu assigned to that location.
 412      if (
 413          defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN &&
 414          array_key_exists( '__unstableLocation', $attributes ) &&
 415          ! array_key_exists( 'ref', $attributes ) &&
 416          ! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) )
 417      ) {
 418          $menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] );
 419          if ( empty( $menu_items ) ) {
 420              return '';
 421          }
 422  
 423          $menu_items_by_parent_id = block_core_navigation_sort_menu_items_by_parent_id( $menu_items );
 424          $parsed_blocks           = block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[0], $menu_items_by_parent_id );
 425          $inner_blocks            = new WP_Block_List( $parsed_blocks, $attributes );
 426      }
 427  
 428      // Load inner blocks from the navigation post.
 429      if ( array_key_exists( 'ref', $attributes ) ) {
 430          $navigation_post = get_post( $attributes['ref'] );
 431          if ( ! isset( $navigation_post ) ) {
 432              return '';
 433          }
 434  
 435          $nav_menu_name = $navigation_post->post_title;
 436  
 437          if ( isset( $seen_menu_names[ $nav_menu_name ] ) ) {
 438              ++$seen_menu_names[ $nav_menu_name ];
 439          } else {
 440              $seen_menu_names[ $nav_menu_name ] = 1;
 441          }
 442  
 443          $parsed_blocks = parse_blocks( $navigation_post->post_content );
 444  
 445          // 'parse_blocks' includes a null block with '\n\n' as the content when
 446          // it encounters whitespace. This code strips it.
 447          $compacted_blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
 448  
 449          // TODO - this uses the full navigation block attributes for the
 450          // context which could be refined.
 451          $inner_blocks = new WP_Block_List( $compacted_blocks, $attributes );
 452      }
 453  
 454      // If there are no inner blocks then fallback to rendering an appropriate fallback.
 455      if ( empty( $inner_blocks ) ) {
 456          $is_fallback = true; // indicate we are rendering the fallback.
 457  
 458          $fallback_blocks = block_core_navigation_get_fallback_blocks();
 459  
 460          // Fallback my have been filtered so do basic test for validity.
 461          if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) {
 462              return '';
 463          }
 464  
 465          $inner_blocks = new WP_Block_List( $fallback_blocks, $attributes );
 466  
 467      }
 468  
 469      $layout_justification = array(
 470          'left'          => 'items-justified-left',
 471          'right'         => 'items-justified-right',
 472          'center'        => 'items-justified-center',
 473          'space-between' => 'items-justified-space-between',
 474      );
 475  
 476      // Restore legacy classnames for submenu positioning.
 477      $layout_class = '';
 478      if ( isset( $attributes['layout']['justifyContent'] ) ) {
 479          $layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ];
 480      }
 481      if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) {
 482          $layout_class .= ' is-vertical';
 483      }
 484  
 485      if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) {
 486          $layout_class .= ' no-wrap';
 487      }
 488  
 489      // Manually add block support text decoration as CSS class.
 490      $text_decoration       = _wp_array_get( $attributes, array( 'style', 'typography', 'textDecoration' ), null );
 491      $text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );
 492  
 493      $colors     = block_core_navigation_build_css_colors( $attributes );
 494      $font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
 495      $classes    = array_merge(
 496          $colors['css_classes'],
 497          $font_sizes['css_classes'],
 498          $is_responsive_menu ? array( 'is-responsive' ) : array(),
 499          $layout_class ? array( $layout_class ) : array(),
 500          $is_fallback ? array( 'is-fallback' ) : array(),
 501          $text_decoration ? array( $text_decoration_class ) : array()
 502      );
 503  
 504      $inner_blocks_html = '';
 505      $is_list_open      = false;
 506      foreach ( $inner_blocks as $inner_block ) {
 507          if ( ( 'core/navigation-link' === $inner_block->name || 'core/home-link' === $inner_block->name || 'core/site-title' === $inner_block->name || 'core/site-logo' === $inner_block->name || 'core/navigation-submenu' === $inner_block->name ) && ! $is_list_open ) {
 508              $is_list_open       = true;
 509              $inner_blocks_html .= '<ul class="wp-block-navigation__container">';
 510          }
 511          if ( 'core/navigation-link' !== $inner_block->name && 'core/home-link' !== $inner_block->name && 'core/site-title' !== $inner_block->name && 'core/site-logo' !== $inner_block->name && 'core/navigation-submenu' !== $inner_block->name && $is_list_open ) {
 512              $is_list_open       = false;
 513              $inner_blocks_html .= '</ul>';
 514          }
 515          if ( 'core/site-title' === $inner_block->name || 'core/site-logo' === $inner_block->name ) {
 516              $inner_blocks_html .= '<li class="wp-block-navigation-item">' . $inner_block->render() . '</li>';
 517          } else {
 518              $inner_blocks_html .= $inner_block->render();
 519          }
 520      }
 521  
 522      if ( $is_list_open ) {
 523          $inner_blocks_html .= '</ul>';
 524      }
 525  
 526      $block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : '';
 527  
 528      // If the menu name has been used previously then append an ID
 529      // to the name to ensure uniqueness across a given post.
 530      if ( isset( $seen_menu_names[ $nav_menu_name ] ) && $seen_menu_names[ $nav_menu_name ] > 1 ) {
 531          $count         = $seen_menu_names[ $nav_menu_name ];
 532          $nav_menu_name = $nav_menu_name . ' ' . ( $count );
 533      }
 534  
 535      $wrapper_attributes = get_block_wrapper_attributes(
 536          array(
 537              'class'      => implode( ' ', $classes ),
 538              'style'      => $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'],
 539              'aria-label' => $nav_menu_name,
 540          )
 541      );
 542  
 543      $modal_unique_id = wp_unique_id( 'modal-' );
 544  
 545      // Determine whether or not navigation elements should be wrapped in the markup required to make it responsive,
 546      // return early if they don't.
 547      if ( ! $is_responsive_menu ) {
 548          return sprintf(
 549              '<nav %1$s>%2$s</nav>',
 550              $wrapper_attributes,
 551              $inner_blocks_html
 552          );
 553      }
 554  
 555      $is_hidden_by_default = isset( $attributes['overlayMenu'] ) && 'always' === $attributes['overlayMenu'];
 556  
 557      $responsive_container_classes = array(
 558          'wp-block-navigation__responsive-container',
 559          $is_hidden_by_default ? 'hidden-by-default' : '',
 560          implode( ' ', $colors['overlay_css_classes'] ),
 561      );
 562      $open_button_classes          = array(
 563          'wp-block-navigation__responsive-container-open',
 564          $is_hidden_by_default ? 'always-shown' : '',
 565      );
 566  
 567      $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"><rect x="4" y="7.5" width="16" height="1.5" /><rect x="4" y="15" width="16" height="1.5" /></svg>';
 568      $should_display_icon_label = isset( $attributes['hasIcon'] ) && true === $attributes['hasIcon'];
 569      $toggle_button_content     = $should_display_icon_label ? $toggle_button_icon : 'Menu';
 570  
 571      $responsive_container_markup = sprintf(
 572          '<button aria-haspopup="true" aria-label="%3$s" class="%6$s" data-micromodal-trigger="%1$s">%9$s</button>
 573              <div class="%5$s" style="%7$s" id="%1$s">
 574                  <div class="wp-block-navigation__responsive-close" tabindex="-1" data-micromodal-close>
 575                      <div class="wp-block-navigation__responsive-dialog" aria-label="%8$s">
 576                              <button aria-label="%4$s" data-micromodal-close class="wp-block-navigation__responsive-container-close"><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 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z"></path></svg></button>
 577                          <div class="wp-block-navigation__responsive-container-content" id="%1$s-content">
 578                              %2$s
 579                          </div>
 580                      </div>
 581                  </div>
 582              </div>',
 583          esc_attr( $modal_unique_id ),
 584          $inner_blocks_html,
 585          __( 'Open menu' ), // Open button label.
 586          __( 'Close menu' ), // Close button label.
 587          esc_attr( implode( ' ', $responsive_container_classes ) ),
 588          esc_attr( implode( ' ', $open_button_classes ) ),
 589          safecss_filter_attr( $colors['overlay_inline_styles'] ),
 590          __( 'Menu' ),
 591          $toggle_button_content
 592      );
 593  
 594      return sprintf(
 595          '<nav %1$s>%2$s</nav>',
 596          $wrapper_attributes,
 597          $responsive_container_markup
 598      );
 599  }
 600  
 601  /**
 602   * Register the navigation block.
 603   *
 604   * @uses render_block_core_navigation()
 605   * @throws WP_Error An WP_Error exception parsing the block definition.
 606   */
 607  function register_block_core_navigation() {
 608      register_block_type_from_metadata(
 609          __DIR__ . '/navigation',
 610          array(
 611              'render_callback' => 'render_block_core_navigation',
 612          )
 613      );
 614  }
 615  
 616  add_action( 'init', 'register_block_core_navigation' );
 617  
 618  /**
 619   * Filter that changes the parsed attribute values of navigation blocks contain typographic presets to contain the values directly.
 620   *
 621   * @param array $parsed_block The block being rendered.
 622   *
 623   * @return array The block being rendered without typographic presets.
 624   */
 625  function block_core_navigation_typographic_presets_backcompatibility( $parsed_block ) {
 626      if ( 'core/navigation' === $parsed_block['blockName'] ) {
 627          $attribute_to_prefix_map = array(
 628              'fontStyle'      => 'var:preset|font-style|',
 629              'fontWeight'     => 'var:preset|font-weight|',
 630              'textDecoration' => 'var:preset|text-decoration|',
 631              'textTransform'  => 'var:preset|text-transform|',
 632          );
 633          foreach ( $attribute_to_prefix_map as $style_attribute => $prefix ) {
 634              if ( ! empty( $parsed_block['attrs']['style']['typography'][ $style_attribute ] ) ) {
 635                  $prefix_len      = strlen( $prefix );
 636                  $attribute_value = &$parsed_block['attrs']['style']['typography'][ $style_attribute ];
 637                  if ( 0 === strncmp( $attribute_value, $prefix, $prefix_len ) ) {
 638                      $attribute_value = substr( $attribute_value, $prefix_len );
 639                  }
 640                  if ( 'textDecoration' === $style_attribute && 'strikethrough' === $attribute_value ) {
 641                      $attribute_value = 'line-through';
 642                  }
 643              }
 644          }
 645      }
 646  
 647      return $parsed_block;
 648  }
 649  
 650  add_filter( 'render_block_data', 'block_core_navigation_typographic_presets_backcompatibility' );


Generated: Mon Jun 27 01:00:02 2022 Cross-referenced by PHPXref 0.7.1