render_block_core_navigation_submenu() │ WP 5.9.0
Renders the core/navigation-submenu block.
No Hooks.
Returns
String. Returns the post content with the legacy widget added.
Usage
render_block_core_navigation_submenu( $attributes, $content, $block );
- $attributes(array) (required)
- The block attributes.
- $content(string) (required)
- The saved content.
- $block(WP_Block) (required)
- The parsed block.
Changelog
| Since 5.9.0 | Introduced. |
render_block_core_navigation_submenu() render block core navigation submenu code WP 7.0
function render_block_core_navigation_submenu( $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_submenu_build_css_font_sizes( $block->context );
$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 ) );
$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;
}
}
$show_submenu_indicators = isset( $block->context['showSubmenuIcon'] ) && $block->context['showSubmenuIcon'];
$computed_visibility = block_core_navigation_submenu_get_submenu_visibility( $block->context );
$open_on_click = 'click' === $computed_visibility;
$open_on_hover = 'hover' === $computed_visibility;
$open_on_hover_and_click = $open_on_hover && $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 ( 'always' === $computed_visibility ) {
$classes[] = 'open-always';
}
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 or are always open, 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 = $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 && $has_submenu ) {
// 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_render_submenu_icon() . '</button>';
}
} else {
$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>';
if ( $has_submenu ) {
$html .= '<span class="wp-block-navigation__submenu-icon">' . block_core_navigation_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'];
}
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;
}