render_block_core_navigation

函数
render_block_core_navigation ( $attributes, $content, $block )
参数
  • (array) $attributes The block attributes.
    Required:
  • (string) $content The saved content.
    Required:
  • (WP_Block) $block The parsed block.
    Required:
返回值
  • (string) Returns the post content with the legacy widget added.
定义位置
相关方法
render_block_core_navigation_linkregister_block_core_navigationrender_block_core_navigation_submenurender_block_core_post_navigation_linkrender_block_core_avatar
引入
-
弃用
-

render_block_core_navigation: 这个函数用来渲染WordPress中的导航块。导航块允许用户在他们的网站上添加一个菜单: 这个函数负责生成导航块的HTML标记。

在服务器上渲染`core/navigation’区块。

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
function render_block_core_navigation( $attributes, $content, $block ) {
static $seen_menu_names = array();
// Flag used to indicate whether the rendered output is considered to be
// a fallback (i.e. the block has no menu associated with it).
$is_fallback = false;
$nav_menu_name = '';
/**
* Deprecated:
* The rgbTextColor and rgbBackgroundColor attributes
* have been deprecated in favor of
* customTextColor and customBackgroundColor ones.
* Move the values from old attrs to the new ones.
*/
if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) {
$attributes['customTextColor'] = $attributes['rgbTextColor'];
}
if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) {
$attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor'];
}
unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] );
/**
* This is for backwards compatibility after `isResponsive` attribute has been removed.
*/
$has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
$is_responsive_menu = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
$should_load_view_script = ! wp_script_is( 'wp-block-navigation-view' ) && ( $is_responsive_menu || $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] );
if ( $should_load_view_script ) {
wp_enqueue_script( 'wp-block-navigation-view' );
}
$should_load_modal_view_script = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'];
if ( $should_load_modal_view_script ) {
wp_enqueue_script( 'wp-block-navigation-view-modal' );
}
$inner_blocks = $block->inner_blocks;
// Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render.
if ( array_key_exists( 'navigationMenuId', $attributes ) ) {
$attributes['ref'] = $attributes['navigationMenuId'];
}
// If:
// - the gutenberg plugin is active
// - `__unstableLocation` is defined
// - we have menu items at the defined location
// - we don't have a relationship to a `wp_navigation` Post (via `ref`).
// ...then create inner blocks from the classic menu assigned to that location.
if (
defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN &&
array_key_exists( '__unstableLocation', $attributes ) &&
! array_key_exists( 'ref', $attributes ) &&
! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) )
) {
$menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] );
if ( empty( $menu_items ) ) {
return '';
}
$menu_items_by_parent_id = block_core_navigation_sort_menu_items_by_parent_id( $menu_items );
$parsed_blocks = block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[0], $menu_items_by_parent_id );
$inner_blocks = new WP_Block_List( $parsed_blocks, $attributes );
}
// Load inner blocks from the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return '';
}
// Only published posts are valid. If this is changed then a corresponding change
// must also be implemented in `use-navigation-menu.js`.
if ( 'publish' === $navigation_post->post_status ) {
$nav_menu_name = $navigation_post->post_title;
if ( isset( $seen_menu_names[ $nav_menu_name ] ) ) {
++$seen_menu_names[ $nav_menu_name ];
} else {
$seen_menu_names[ $nav_menu_name ] = 1;
}
$parsed_blocks = parse_blocks( $navigation_post->post_content );
// 'parse_blocks' includes a null block with 'nn' as the content when
// it encounters whitespace. This code strips it.
$compacted_blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
// TODO - this uses the full navigation block attributes for the
// context which could be refined.
$inner_blocks = new WP_Block_List( $compacted_blocks, $attributes );
}
}
// If there are no inner blocks then fallback to rendering an appropriate fallback.
if ( empty( $inner_blocks ) ) {
$is_fallback = true; // indicate we are rendering the fallback.
$fallback_blocks = block_core_navigation_get_fallback_blocks();
// Fallback my have been filtered so do basic test for validity.
if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) {
return '';
}
$inner_blocks = new WP_Block_List( $fallback_blocks, $attributes );
}
/**
* Filter navigation block $inner_blocks.
* Allows modification of a navigation block menu items.
*
* @since 6.1.0
*
* @param WP_Block_List $inner_blocks
*/
$inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks );
$layout_justification = array(
'left' => 'items-justified-left',
'right' => 'items-justified-right',
'center' => 'items-justified-center',
'space-between' => 'items-justified-space-between',
);
// Restore legacy classnames for submenu positioning.
$layout_class = '';
if ( isset( $attributes['layout']['justifyContent'] ) ) {
$layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ];
}
if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) {
$layout_class .= ' is-vertical';
}
if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) {
$layout_class .= ' no-wrap';
}
// Manually add block support text decoration as CSS class.
$text_decoration = _wp_array_get( $attributes, array( 'style', 'typography', 'textDecoration' ), null );
$text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );
$colors = block_core_navigation_build_css_colors( $attributes );
$font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
$classes = array_merge(
$colors['css_classes'],
$font_sizes['css_classes'],
$is_responsive_menu ? array( 'is-responsive' ) : array(),
$layout_class ? array( $layout_class ) : array(),
$is_fallback ? array( 'is-fallback' ) : array(),
$text_decoration ? array( $text_decoration_class ) : array()
);
$post_ids = block_core_navigation_get_post_ids( $inner_blocks );
if ( $post_ids ) {
_prime_post_caches( $post_ids, false, false );
}
$inner_blocks_html = '';
$is_list_open = false;
foreach ( $inner_blocks as $inner_block ) {
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 ) {
$is_list_open = true;
$inner_blocks_html .= '<ul class="wp-block-navigation__container">';
}
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 ) {
$is_list_open = false;
$inner_blocks_html .= '</ul>';
}
$inner_block_content = $inner_block->render();
if ( 'core/site-title' === $inner_block->name || ( 'core/site-logo' === $inner_block->name && $inner_block_content ) ) {
$inner_blocks_html .= '<li class="wp-block-navigation-item">' . $inner_block_content . '</li>';
} else {
$inner_blocks_html .= $inner_block_content;
}
}
if ( $is_list_open ) {
$inner_blocks_html .= '</ul>';
}
$block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : '';
// If the menu name has been used previously then append an ID
// to the name to ensure uniqueness across a given post.
if ( isset( $seen_menu_names[ $nav_menu_name ] ) && $seen_menu_names[ $nav_menu_name ] > 1 ) {
$count = $seen_menu_names[ $nav_menu_name ];
$nav_menu_name = $nav_menu_name . ' ' . ( $count );
}
$wrapper_attributes = get_block_wrapper_attributes(
array(
'class' => implode( ' ', $classes ),
'style' => $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'],
'aria-label' => $nav_menu_name,
)
);
$modal_unique_id = wp_unique_id( 'modal-' );
// Determine whether or not navigation elements should be wrapped in the markup required to make it responsive,
// return early if they don't.
if ( ! $is_responsive_menu ) {
return sprintf(
'<nav %1$s>%2$s</nav>',
$wrapper_attributes,
$inner_blocks_html
);
}
$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"><rect x="4" y="7.5" width="16" height="1.5" /><rect x="4" y="15" width="16" height="1.5" /></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 5v1.5h14V5H5zm0 7.8h14v-1.5H5v1.5zM5 19h14v-1.5H5V19z" /></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 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>';
$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.
$responsive_container_markup = sprintf(
'<button aria-haspopup="true" %3$s class="%6$s" data-micromodal-trigger="%1$s">%9$s</button>
<div class="%5$s" style="%7$s" id="%1$s">
<div class="wp-block-navigation__responsive-close" tabindex="-1" data-micromodal-close>
<div class="wp-block-navigation__responsive-dialog" aria-label="%8$s">
<button %4$s data-micromodal-close class="wp-block-navigation__responsive-container-close">%10$s</button>
<div class="wp-block-navigation__responsive-container-content" id="%1$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( implode( ' ', $responsive_container_classes ) ),
esc_attr( implode( ' ', $open_button_classes ) ),
esc_attr( safecss_filter_attr( $colors['overlay_inline_styles'] ) ),
__( 'Menu' ),
$toggle_button_content,
$toggle_close_button_content
);
return sprintf(
'<nav %1$s>%2$s</nav>',
$wrapper_attributes,
$responsive_container_markup
);
}
function render_block_core_navigation( $attributes, $content, $block ) { static $seen_menu_names = array(); // Flag used to indicate whether the rendered output is considered to be // a fallback (i.e. the block has no menu associated with it). $is_fallback = false; $nav_menu_name = ''; /** * Deprecated: * The rgbTextColor and rgbBackgroundColor attributes * have been deprecated in favor of * customTextColor and customBackgroundColor ones. * Move the values from old attrs to the new ones. */ if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) { $attributes['customTextColor'] = $attributes['rgbTextColor']; } if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) { $attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor']; } unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] ); /** * This is for backwards compatibility after `isResponsive` attribute has been removed. */ $has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive']; $is_responsive_menu = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute; $should_load_view_script = ! wp_script_is( 'wp-block-navigation-view' ) && ( $is_responsive_menu || $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] ); if ( $should_load_view_script ) { wp_enqueue_script( 'wp-block-navigation-view' ); } $should_load_modal_view_script = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu']; if ( $should_load_modal_view_script ) { wp_enqueue_script( 'wp-block-navigation-view-modal' ); } $inner_blocks = $block->inner_blocks; // Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render. if ( array_key_exists( 'navigationMenuId', $attributes ) ) { $attributes['ref'] = $attributes['navigationMenuId']; } // If: // - the gutenberg plugin is active // - `__unstableLocation` is defined // - we have menu items at the defined location // - we don't have a relationship to a `wp_navigation` Post (via `ref`). // ...then create inner blocks from the classic menu assigned to that location. if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN && array_key_exists( '__unstableLocation', $attributes ) && ! array_key_exists( 'ref', $attributes ) && ! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) ) ) { $menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ); if ( empty( $menu_items ) ) { return ''; } $menu_items_by_parent_id = block_core_navigation_sort_menu_items_by_parent_id( $menu_items ); $parsed_blocks = block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[0], $menu_items_by_parent_id ); $inner_blocks = new WP_Block_List( $parsed_blocks, $attributes ); } // Load inner blocks from the navigation post. if ( array_key_exists( 'ref', $attributes ) ) { $navigation_post = get_post( $attributes['ref'] ); if ( ! isset( $navigation_post ) ) { return ''; } // Only published posts are valid. If this is changed then a corresponding change // must also be implemented in `use-navigation-menu.js`. if ( 'publish' === $navigation_post->post_status ) { $nav_menu_name = $navigation_post->post_title; if ( isset( $seen_menu_names[ $nav_menu_name ] ) ) { ++$seen_menu_names[ $nav_menu_name ]; } else { $seen_menu_names[ $nav_menu_name ] = 1; } $parsed_blocks = parse_blocks( $navigation_post->post_content ); // 'parse_blocks' includes a null block with 'nn' as the content when // it encounters whitespace. This code strips it. $compacted_blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks ); // TODO - this uses the full navigation block attributes for the // context which could be refined. $inner_blocks = new WP_Block_List( $compacted_blocks, $attributes ); } } // If there are no inner blocks then fallback to rendering an appropriate fallback. if ( empty( $inner_blocks ) ) { $is_fallback = true; // indicate we are rendering the fallback. $fallback_blocks = block_core_navigation_get_fallback_blocks(); // Fallback my have been filtered so do basic test for validity. if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) { return ''; } $inner_blocks = new WP_Block_List( $fallback_blocks, $attributes ); } /** * Filter navigation block $inner_blocks. * Allows modification of a navigation block menu items. * * @since 6.1.0 * * @param WP_Block_List $inner_blocks */ $inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks ); $layout_justification = array( 'left' => 'items-justified-left', 'right' => 'items-justified-right', 'center' => 'items-justified-center', 'space-between' => 'items-justified-space-between', ); // Restore legacy classnames for submenu positioning. $layout_class = ''; if ( isset( $attributes['layout']['justifyContent'] ) ) { $layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ]; } if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) { $layout_class .= ' is-vertical'; } if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) { $layout_class .= ' no-wrap'; } // Manually add block support text decoration as CSS class. $text_decoration = _wp_array_get( $attributes, array( 'style', 'typography', 'textDecoration' ), null ); $text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration ); $colors = block_core_navigation_build_css_colors( $attributes ); $font_sizes = block_core_navigation_build_css_font_sizes( $attributes ); $classes = array_merge( $colors['css_classes'], $font_sizes['css_classes'], $is_responsive_menu ? array( 'is-responsive' ) : array(), $layout_class ? array( $layout_class ) : array(), $is_fallback ? array( 'is-fallback' ) : array(), $text_decoration ? array( $text_decoration_class ) : array() ); $post_ids = block_core_navigation_get_post_ids( $inner_blocks ); if ( $post_ids ) { _prime_post_caches( $post_ids, false, false ); } $inner_blocks_html = ''; $is_list_open = false; foreach ( $inner_blocks as $inner_block ) { 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 ) { $is_list_open = true; $inner_blocks_html .= '<ul class="wp-block-navigation__container">'; } 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 ) { $is_list_open = false; $inner_blocks_html .= '</ul>'; } $inner_block_content = $inner_block->render(); if ( 'core/site-title' === $inner_block->name || ( 'core/site-logo' === $inner_block->name && $inner_block_content ) ) { $inner_blocks_html .= '<li class="wp-block-navigation-item">' . $inner_block_content . '</li>'; } else { $inner_blocks_html .= $inner_block_content; } } if ( $is_list_open ) { $inner_blocks_html .= '</ul>'; } $block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : ''; // If the menu name has been used previously then append an ID // to the name to ensure uniqueness across a given post. if ( isset( $seen_menu_names[ $nav_menu_name ] ) && $seen_menu_names[ $nav_menu_name ] > 1 ) { $count = $seen_menu_names[ $nav_menu_name ]; $nav_menu_name = $nav_menu_name . ' ' . ( $count ); } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ), 'style' => $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'], 'aria-label' => $nav_menu_name, ) ); $modal_unique_id = wp_unique_id( 'modal-' ); // Determine whether or not navigation elements should be wrapped in the markup required to make it responsive, // return early if they don't. if ( ! $is_responsive_menu ) { return sprintf( '<nav %1$s>%2$s</nav>', $wrapper_attributes, $inner_blocks_html ); } $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"><rect x="4" y="7.5" width="16" height="1.5" /><rect x="4" y="15" width="16" height="1.5" /></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 5v1.5h14V5H5zm0 7.8h14v-1.5H5v1.5zM5 19h14v-1.5H5V19z" /></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 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>'; $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. $responsive_container_markup = sprintf( '<button aria-haspopup="true" %3$s class="%6$s" data-micromodal-trigger="%1$s">%9$s</button> <div class="%5$s" style="%7$s" id="%1$s"> <div class="wp-block-navigation__responsive-close" tabindex="-1" data-micromodal-close> <div class="wp-block-navigation__responsive-dialog" aria-label="%8$s"> <button %4$s data-micromodal-close class="wp-block-navigation__responsive-container-close">%10$s</button> <div class="wp-block-navigation__responsive-container-content" id="%1$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( implode( ' ', $responsive_container_classes ) ), esc_attr( implode( ' ', $open_button_classes ) ), esc_attr( safecss_filter_attr( $colors['overlay_inline_styles'] ) ), __( 'Menu' ), $toggle_button_content, $toggle_close_button_content ); return sprintf( '<nav %1$s>%2$s</nav>', $wrapper_attributes, $responsive_container_markup ); }
function render_block_core_navigation( $attributes, $content, $block ) {

	static $seen_menu_names = array();

	// Flag used to indicate whether the rendered output is considered to be
	// a fallback (i.e. the block has no menu associated with it).
	$is_fallback = false;

	$nav_menu_name = '';

	/**
	 * Deprecated:
	 * The rgbTextColor and rgbBackgroundColor attributes
	 * have been deprecated in favor of
	 * customTextColor and customBackgroundColor ones.
	 * Move the values from old attrs to the new ones.
	 */
	if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) {
		$attributes['customTextColor'] = $attributes['rgbTextColor'];
	}

	if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) {
		$attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor'];
	}

	unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] );

	/**
	 * This is for backwards compatibility after `isResponsive` attribute has been removed.
	 */
	$has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
	$is_responsive_menu           = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
	$should_load_view_script      = ! wp_script_is( 'wp-block-navigation-view' ) && ( $is_responsive_menu || $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] );
	if ( $should_load_view_script ) {
		wp_enqueue_script( 'wp-block-navigation-view' );
	}

	$should_load_modal_view_script = isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'];
	if ( $should_load_modal_view_script ) {
		wp_enqueue_script( 'wp-block-navigation-view-modal' );
	}

	$inner_blocks = $block->inner_blocks;

	// Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render.
	if ( array_key_exists( 'navigationMenuId', $attributes ) ) {
		$attributes['ref'] = $attributes['navigationMenuId'];
	}

	// If:
	// - the gutenberg plugin is active
	// - `__unstableLocation` is defined
	// - we have menu items at the defined location
	// - we don't have a relationship to a `wp_navigation` Post (via `ref`).
	// ...then create inner blocks from the classic menu assigned to that location.
	if (
		defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN &&
		array_key_exists( '__unstableLocation', $attributes ) &&
		! array_key_exists( 'ref', $attributes ) &&
		! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) )
	) {
		$menu_items = block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] );
		if ( empty( $menu_items ) ) {
			return '';
		}

		$menu_items_by_parent_id = block_core_navigation_sort_menu_items_by_parent_id( $menu_items );
		$parsed_blocks           = block_core_navigation_parse_blocks_from_menu_items( $menu_items_by_parent_id[0], $menu_items_by_parent_id );
		$inner_blocks            = new WP_Block_List( $parsed_blocks, $attributes );
	}

	// Load inner blocks from the navigation post.
	if ( array_key_exists( 'ref', $attributes ) ) {
		$navigation_post = get_post( $attributes['ref'] );
		if ( ! isset( $navigation_post ) ) {
			return '';
		}

		// Only published posts are valid. If this is changed then a corresponding change
		// must also be implemented in `use-navigation-menu.js`.
		if ( 'publish' === $navigation_post->post_status ) {
			$nav_menu_name = $navigation_post->post_title;

			if ( isset( $seen_menu_names[ $nav_menu_name ] ) ) {
				++$seen_menu_names[ $nav_menu_name ];
			} else {
				$seen_menu_names[ $nav_menu_name ] = 1;
			}

			$parsed_blocks = parse_blocks( $navigation_post->post_content );

			// 'parse_blocks' includes a null block with 'nn' as the content when
			// it encounters whitespace. This code strips it.
			$compacted_blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );

			// TODO - this uses the full navigation block attributes for the
			// context which could be refined.
			$inner_blocks = new WP_Block_List( $compacted_blocks, $attributes );
		}
	}

	// If there are no inner blocks then fallback to rendering an appropriate fallback.
	if ( empty( $inner_blocks ) ) {
		$is_fallback = true; // indicate we are rendering the fallback.

		$fallback_blocks = block_core_navigation_get_fallback_blocks();

		// Fallback my have been filtered so do basic test for validity.
		if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) {
			return '';
		}

		$inner_blocks = new WP_Block_List( $fallback_blocks, $attributes );
	}

	/**
	 * Filter navigation block $inner_blocks.
	 * Allows modification of a navigation block menu items.
	 *
	 * @since 6.1.0
	 *
	 * @param WP_Block_List $inner_blocks
	 */
	$inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks );

	$layout_justification = array(
		'left'          => 'items-justified-left',
		'right'         => 'items-justified-right',
		'center'        => 'items-justified-center',
		'space-between' => 'items-justified-space-between',
	);

	// Restore legacy classnames for submenu positioning.
	$layout_class = '';
	if ( isset( $attributes['layout']['justifyContent'] ) ) {
		$layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ];
	}
	if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) {
		$layout_class .= ' is-vertical';
	}

	if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) {
		$layout_class .= ' no-wrap';
	}

	// Manually add block support text decoration as CSS class.
	$text_decoration       = _wp_array_get( $attributes, array( 'style', 'typography', 'textDecoration' ), null );
	$text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );

	$colors     = block_core_navigation_build_css_colors( $attributes );
	$font_sizes = block_core_navigation_build_css_font_sizes( $attributes );
	$classes    = array_merge(
		$colors['css_classes'],
		$font_sizes['css_classes'],
		$is_responsive_menu ? array( 'is-responsive' ) : array(),
		$layout_class ? array( $layout_class ) : array(),
		$is_fallback ? array( 'is-fallback' ) : array(),
		$text_decoration ? array( $text_decoration_class ) : array()
	);

	$post_ids = block_core_navigation_get_post_ids( $inner_blocks );
	if ( $post_ids ) {
		_prime_post_caches( $post_ids, false, false );
	}

	$inner_blocks_html = '';
	$is_list_open      = false;
	foreach ( $inner_blocks as $inner_block ) {
		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 ) {
			$is_list_open       = true;
			$inner_blocks_html .= '<ul class="wp-block-navigation__container">';
		}
		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 ) {
			$is_list_open       = false;
			$inner_blocks_html .= '</ul>';
		}
		$inner_block_content = $inner_block->render();
		if ( 'core/site-title' === $inner_block->name || ( 'core/site-logo' === $inner_block->name && $inner_block_content ) ) {
			$inner_blocks_html .= '<li class="wp-block-navigation-item">' . $inner_block_content . '</li>';
		} else {
			$inner_blocks_html .= $inner_block_content;
		}
	}

	if ( $is_list_open ) {
		$inner_blocks_html .= '</ul>';
	}

	$block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : '';

	// If the menu name has been used previously then append an ID
	// to the name to ensure uniqueness across a given post.
	if ( isset( $seen_menu_names[ $nav_menu_name ] ) && $seen_menu_names[ $nav_menu_name ] > 1 ) {
		$count         = $seen_menu_names[ $nav_menu_name ];
		$nav_menu_name = $nav_menu_name . ' ' . ( $count );
	}

	$wrapper_attributes = get_block_wrapper_attributes(
		array(
			'class'      => implode( ' ', $classes ),
			'style'      => $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'],
			'aria-label' => $nav_menu_name,
		)
	);

	$modal_unique_id = wp_unique_id( 'modal-' );

	// Determine whether or not navigation elements should be wrapped in the markup required to make it responsive,
	// return early if they don't.
	if ( ! $is_responsive_menu ) {
		return sprintf(
			'<nav %1$s>%2$s</nav>',
			$wrapper_attributes,
			$inner_blocks_html
		);
	}

	$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"><rect x="4" y="7.5" width="16" height="1.5" /><rect x="4" y="15" width="16" height="1.5" /></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 5v1.5h14V5H5zm0 7.8h14v-1.5H5v1.5zM5 19h14v-1.5H5V19z" /></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 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>';
	$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.

	$responsive_container_markup = sprintf(
		'<button aria-haspopup="true" %3$s class="%6$s" data-micromodal-trigger="%1$s">%9$s</button>
			<div class="%5$s" style="%7$s" id="%1$s">
				<div class="wp-block-navigation__responsive-close" tabindex="-1" data-micromodal-close>
					<div class="wp-block-navigation__responsive-dialog" aria-label="%8$s">
							<button %4$s data-micromodal-close class="wp-block-navigation__responsive-container-close">%10$s</button>
						<div class="wp-block-navigation__responsive-container-content" id="%1$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( implode( ' ', $responsive_container_classes ) ),
		esc_attr( implode( ' ', $open_button_classes ) ),
		esc_attr( safecss_filter_attr( $colors['overlay_inline_styles'] ) ),
		__( 'Menu' ),
		$toggle_button_content,
		$toggle_close_button_content
	);

	return sprintf(
		'<nav %1$s>%2$s</nav>',
		$wrapper_attributes,
		$responsive_container_markup
	);
}

常见问题

FAQs
查看更多 >