block_core_navigation_add_support_classes_to_container( string $block_content, array $block ): string

1622function block_core_navigation_add_support_classes_to_container( $block_content, $block ) {1623	if ( 'core/navigation' !== ( $block['blockName'] ?? null ) || empty( $block_content ) ) {1624		return $block_content;1625	}1626 1627	$attributes = is_array( $block['attrs'] ?? null ) ? $block['attrs'] : array();1628	$style      = is_array( $attributes['style'] ?? null ) ? $attributes['style'] : array();1629	if (1630		defined( 'IS_GUTENBERG_PLUGIN' ) &&1631		IS_GUTENBERG_PLUGIN &&1632		function_exists( 'gutenberg_resolve_style_state_aliases' )1633	) {1634		$style = gutenberg_resolve_style_state_aliases( $style, 'core/navigation' );1635	}1636 1637	$global_settings          = wp_get_global_settings();1638	$viewport_settings        = $global_settings['viewport'] ?? null;1639	$responsive_media_queries = array();1640	if ( method_exists( 'WP_Theme_JSON_Gutenberg', 'get_viewport_media_queries' ) ) {1641		$responsive_media_queries = WP_Theme_JSON_Gutenberg::get_viewport_media_queries( $viewport_settings );1642	} elseif ( method_exists( 'WP_Theme_JSON', 'get_viewport_media_queries' ) ) {1643		$responsive_media_queries = WP_Theme_JSON::get_viewport_media_queries( $viewport_settings );1644	}1645 1646	$styles      = array();1647	$base_layout = is_array( $attributes['layout'] ?? null ) ? $attributes['layout'] : array();1648	foreach ( $responsive_media_queries as $breakpoint => $media_query ) {1649		$viewport_style  = is_array( $style[ $breakpoint ] ?? null ) ? $style[ $breakpoint ] : array();1650		$viewport_layout = is_array( $viewport_style['layout'] ?? null ) ? $viewport_style['layout'] : array();1651		if ( empty( $viewport_layout ) ) {1652			continue;1653		}1654 1655		$styles[] = array(1656			'declarations' => block_core_navigation_get_layout_custom_property_declarations(1657				array_replace( $base_layout, $viewport_layout )1658			),1659			'rules_group'  => $media_query,1660		);1661	}1662 1663	$processor = new WP_HTML_Tag_Processor( $block_content );1664	if ( ! $processor->next_tag() ) {1665		return $block_content;1666	}1667 1668	$class_attribute = $processor->get_attribute( 'class' );1669	$state_class     = null;1670	if ( is_string( $class_attribute ) && preg_match( '/\bwp-states-[a-f0-9]{8}\b/', $class_attribute, $matches ) ) {1671		$state_class = $matches[0];1672	}1673 1674	$layout_class = null;1675	if ( ! empty( $styles ) ) {1676		$layout_class = wp_unique_id( 'wp-block-navigation-' );1677		// The inner selector includes both Navigation classes so it overrides the1678		// default layout custom properties set by `.wp-block-navigation.items-*`.1679		$selector = ".wp-block-navigation.{$layout_class},.wp-block-navigation.wp-block-navigation__container.{$layout_class}";1680		foreach ( $styles as &$style_rule ) {1681			$style_rule['selector'] = $selector;1682		}1683		unset( $style_rule );1684 1685		$processor->add_class( $layout_class );1686		wp_style_engine_get_stylesheet_from_css_rules(1687			$styles,1688			array( 'context' => 'block-supports' )1689		);1690	}1691 1692	if ( null === $state_class && null === $layout_class ) {1693		return $block_content;1694	}1695 1696	while ( $processor->next_tag() ) {1697		// Custom overlay content can include nested Navigation blocks.1698		// Avoid applying the outer Navigation classes to an inner nav block.1699		if ( $processor->has_class( 'wp-block-navigation' ) && ! $processor->has_class( 'wp-block-navigation__container' ) ) {1700			break;1701		}