<?php

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/**

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* Server-side rendering of the `core/navigation-submenu` block.

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*

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* @package WordPress

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*/

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/**

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* Build an array with CSS classes and inline styles defining the font sizes

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* which will be applied to the navigation markup in the front-end.

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*

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* @since 5.9.0

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*

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* @param array $context Navigation block context.

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* @return array Font size CSS classes and inline styles.

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*/

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function block_core_navigation_submenu_build_css_font_sizes( $context ) {

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// CSS classes.

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$font_sizes = array(

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'css_classes' => array(),

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'inline_styles' => '',

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);

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$has_named_font_size = array_key_exists( 'fontSize', $context );

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$has_custom_font_size = isset( $context['style']['typography']['fontSize'] );

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if ( $has_named_font_size ) {

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// Add the font size class.

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$font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $context['fontSize'] );

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} elseif ( $has_custom_font_size ) {

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// Add the custom font size inline style.

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$font_sizes['inline_styles'] = sprintf(

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'font-size: %s;',

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wp_get_typography_font_size_value(

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array(

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'size' => $context['style']['typography']['fontSize'],

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)

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)

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);

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}

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return $font_sizes;

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}

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/**

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* Returns the top-level submenu SVG chevron icon.

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*

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* @since 5.9.0

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*

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* @return string

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*/

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function block_core_navigation_submenu_render_submenu_icon() {

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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>';

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}

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/**

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* Renders the `core/navigation-submenu` block.

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*

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* @since 5.9.0

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*

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* @param array $attributes The block attributes.

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* @param string $content The saved content.

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* @param WP_Block $block The parsed block.

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*

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* @return string Returns the post content with the legacy widget added.

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*/

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function render_block_core_navigation_submenu( $attributes, $content, $block ) {

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$navigation_link_has_id = isset( $attributes['id'] ) && is_numeric( $attributes['id'] );

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$is_post_type = isset( $attributes['kind'] ) && 'post-type' === $attributes['kind'];

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$is_post_type = $is_post_type || isset( $attributes['type'] ) && ( 'post' === $attributes['type'] || 'page' === $attributes['type'] );

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// Don't render the block's subtree if it is a draft.

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if ( $is_post_type && $navigation_link_has_id && 'publish' !== get_post_status( $attributes['id'] ) ) {

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return '';

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}

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// Don't render the block's subtree if it has no label.

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if ( empty( $attributes['label'] ) ) {

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return '';

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}

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$font_sizes = block_core_navigation_submenu_build_css_font_sizes( $block->context );

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$style_attribute = $font_sizes['inline_styles'];

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$has_submenu = count( $block->inner_blocks ) > 0;

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$kind = empty( $attributes['kind'] ) ? 'post_type' : str_replace( '-', '_', $attributes['kind'] );

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$is_active = ! empty( $attributes['id'] ) && get_queried_object_id() === (int) $attributes['id'] && ! empty( get_queried_object()->$kind );

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if ( is_post_type_archive() && ! empty( $attributes['url'] ) ) {

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$queried_archive_link = get_post_type_archive_link( get_queried_object()->name );

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if ( $attributes['url'] === $queried_archive_link ) {

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$is_active = true;

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}

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}

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$show_submenu_indicators = isset( $block->context['showSubmenuIcon'] ) && $block->context['showSubmenuIcon'];

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$open_on_click = isset( $block->context['openSubmenusOnClick'] ) && $block->context['openSubmenusOnClick'];

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$open_on_hover_and_click = isset( $block->context['openSubmenusOnClick'] ) && ! $block->context['openSubmenusOnClick'] &&

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$show_submenu_indicators;

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$classes = array(

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'wp-block-navigation-item',

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);

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$classes = array_merge(

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$classes,

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$font_sizes['css_classes']

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);

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if ( $has_submenu ) {

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$classes[] = 'has-child';

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}

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if ( $open_on_click ) {

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$classes[] = 'open-on-click';

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}

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if ( $open_on_hover_and_click ) {

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$classes[] = 'open-on-hover-click';

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}

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if ( $is_active ) {

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$classes[] = 'current-menu-item';

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}

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$wrapper_attributes = get_block_wrapper_attributes(

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array(

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'class' => implode( ' ', $classes ),

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'style' => $style_attribute,

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)

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);

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$label = '';

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if ( isset( $attributes['label'] ) ) {

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$label .= wp_kses_post( $attributes['label'] );

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}

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$aria_label = sprintf(

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/* translators: Accessibility text. %s: Parent page title. */

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__( '%s submenu' ),

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wp_strip_all_tags( $label )

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);

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$html = '<li ' . $wrapper_attributes . '>';

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// If Submenus open on hover, we render an anchor tag with attributes.

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// If submenu icons are set to show, we also render a submenu button, so the submenu can be opened on click.

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if ( ! $open_on_click ) {

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$item_url = isset( $attributes['url'] ) ? $attributes['url'] : '';

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// Start appending HTML attributes to anchor tag.

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$html .= '<a class="wp-block-navigation-item__content"';

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// The href attribute on a and area elements is not required;

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// when those elements do not have href attributes they do not create hyperlinks.

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// But also The href attribute must have a value that is a valid URL potentially

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// surrounded by spaces.

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// see: https://html.spec.whatwg.org/multipage/links.html#links-created-by-a-and-area-elements.

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if ( ! empty( $item_url ) ) {

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$html .= ' href="' . esc_url( $item_url ) . '"';

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}

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if ( $is_active ) {

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$html .= ' aria-current="page"';

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}

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if ( isset( $attributes['opensInNewTab'] ) && true === $attributes['opensInNewTab'] ) {

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$html .= ' target="_blank" ';

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}

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if ( isset( $attributes['rel'] ) ) {

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$html .= ' rel="' . esc_attr( $attributes['rel'] ) . '"';

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} elseif ( isset( $attributes['nofollow'] ) && $attributes['nofollow'] ) {

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$html .= ' rel="nofollow"';

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}

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if ( isset( $attributes['title'] ) ) {

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$html .= ' title="' . esc_attr( $attributes['title'] ) . '"';

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}

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$html .= '>';

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// End appending HTML attributes to anchor tag.

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$html .= '<span class="wp-block-navigation-item__label">';

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$html .= $label;

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$html .= '</span>';

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// Add description if available.

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if ( ! empty( $attributes['description'] ) ) {

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$html .= '<span class="wp-block-navigation-item__description">';

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$html .= wp_kses_post( $attributes['description'] );

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$html .= '</span>';

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}

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$html .= '</a>';

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// End anchor tag content.

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if ( $show_submenu_indicators ) {

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// The submenu icon is rendered in a button here

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// so that there's a clickable element to open the submenu.

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$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>';

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}

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} else {

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// If menus open on click, we render the parent as a button.

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$html .= '<button aria-label="' . esc_attr( $aria_label ) . '" class="wp-block-navigation-item__content wp-block-navigation-submenu__toggle" aria-expanded="false">';

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// Wrap title with span to isolate it from submenu icon.

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$html .= '<span class="wp-block-navigation-item__label">';

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$html .= $label;

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$html .= '</span>';

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// Add description if available.

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if ( ! empty( $attributes['description'] ) ) {

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$html .= '<span class="wp-block-navigation-item__description">';

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$html .= wp_kses_post( $attributes['description'] );

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$html .= '</span>';

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}

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$html .= '</button>';

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$html .= '<span class="wp-block-navigation__submenu-icon">' . block_core_navigation_submenu_render_submenu_icon() . '</span>';

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}

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if ( $has_submenu ) {

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// Copy some attributes from the parent block to this one.

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// Ideally this would happen in the client when the block is created.

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if ( array_key_exists( 'overlayTextColor', $block->context ) ) {

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$attributes['textColor'] = $block->context['overlayTextColor'];

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}

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if ( array_key_exists( 'overlayBackgroundColor', $block->context ) ) {

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$attributes['backgroundColor'] = $block->context['overlayBackgroundColor'];

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}

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if ( array_key_exists( 'customOverlayTextColor', $block->context ) ) {

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$attributes['style']['color']['text'] = $block->context['customOverlayTextColor'];

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}

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if ( array_key_exists( 'customOverlayBackgroundColor', $block->context ) ) {

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$attributes['style']['color']['background'] = $block->context['customOverlayBackgroundColor'];

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}

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// This allows us to be able to get a response from wp_apply_colors_support.

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$block->block_type->supports['color'] = true;

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$colors_supports = wp_apply_colors_support( $block->block_type, $attributes );

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$css_classes = 'wp-block-navigation__submenu-container';

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if ( array_key_exists( 'class', $colors_supports ) ) {

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$css_classes .= ' ' . $colors_supports['class'];

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}

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$style_attribute = '';

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if ( array_key_exists( 'style', $colors_supports ) ) {

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$style_attribute = $colors_supports['style'];

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}

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$inner_blocks_html = '';

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foreach ( $block->inner_blocks as $inner_block ) {

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$inner_blocks_html .= $inner_block->render();

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}

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if ( strpos( $inner_blocks_html, 'current-menu-item' ) ) {

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$tag_processor = new WP_HTML_Tag_Processor( $html );

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while ( $tag_processor->next_tag( array( 'class_name' => 'wp-block-navigation-item' ) ) ) {

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$tag_processor->add_class( 'current-menu-ancestor' );

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}

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$html = $tag_processor->get_updated_html();

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}

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$wrapper_attributes = get_block_wrapper_attributes(

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array(

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'class' => $css_classes,

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'style' => $style_attribute,

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)

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);

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$html .= sprintf(

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'<ul %s>%s</ul>',

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$wrapper_attributes,

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$inner_blocks_html

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);

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}

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$html .= '</li>';

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return $html;

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}

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/**

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* Register the navigation submenu block.

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*

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* @since 5.9.0

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*

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* @uses render_block_core_navigation_submenu()

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* @throws WP_Error An WP_Error exception parsing the block definition.

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*/

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function register_block_core_navigation_submenu() {

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register_block_type_from_metadata(

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__DIR__ . '/navigation-submenu',

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array(

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'render_callback' => 'render_block_core_navigation_submenu',

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)

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);

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}

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add_action( 'init', 'register_block_core_navigation_submenu' );

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