pports', 'prettify' => false, ) ); if ( $child_css ) { $outer_class_names[] = $container_content_class; } } // Prep the processor for modifying the block output. $processor = new WP_HTML_Tag_Processor( $block_content ); // Having no tags implies there are no tags onto which to add class names. if ( ! $processor->next_tag() ) { return $block_content; } /* * A block may not support layout but still be affected by a parent block's layout. * * In these cases add the appropriate class names and then return early; there's * no need to investigate on this block whether additional layout constraints apply. */ if ( ! $block_supports_layout && ! empty( $outer_class_names ) ) { foreach ( $outer_class_names as $class_name ) { $processor->add_class( $class_name ); } return $processor->get_updated_html(); } elseif ( ! $block_supports_layout ) { // Ensure layout classnames are not injected if there is no layout support. return $block_content; } $fallback_layout = $block_type->supports['layout']['default'] ?? array(); if ( empty( $fallback_layout ) ) { $fallback_layout = $block_type->supports['__experimentalLayout']['default'] ?? array(); } $used_layout = $block['attrs']['layout'] ?? $fallback_layout; $class_names = array(); $layout_definitions = wp_get_layout_definitions(); // Set the correct layout type for blocks using legacy content width. if ( isset( $used_layout['inherit'] ) && $used_layout['inherit'] || isset( $used_layout['contentSize'] ) && $used_layout['contentSize'] ) { $used_layout['type'] = 'constrained'; } $root_padding_aware_alignments = $global_settings['useRootPaddingAwareAlignments'] ?? false; if ( $root_padding_aware_alignments && isset( $used_layout['type'] ) && 'constrained' === $used_layout['type'] ) { $class_names[] = 'has-global-padding'; } /* * The following section was added to reintroduce a small set of layout classnames that were * removed in the 5.9 release (https://github.com/WordPress/gutenberg/issues/38719). It is * not intended to provide an extended set of classes to match all block layout attributes * here. */ if ( ! empty( $block['attrs']['layout']['orientation'] ) ) { $class_names[] = 'is-' . sanitize_title( $block['attrs']['layout']['orientation'] ); } if ( ! empty( $block['attrs']['layout']['justifyContent'] ) ) { $class_names[] = 'is-content-justification-' . sanitize_title( $block['attrs']['layout']['justifyContent'] ); } if ( ! empty( $block['attrs']['layout']['flexWrap'] ) && 'nowrap' === $block['attrs']['layout']['flexWrap'] ) { $class_names[] = 'is-nowrap'; } // Get classname for layout type. if ( isset( $used_layout['type'] ) ) { $layout_classname = $layout_definitions[ $used_layout['type'] ]['className'] ?? ''; } else { $layout_classname = $layout_definitions['default']['className'] ?? ''; } if ( $layout_classname && is_string( $layout_classname ) ) { $class_names[] = sanitize_title( $layout_classname ); } /* * Only generate Layout styles if the theme has not opted-out. * Attribute-based Layout classnames are output in all cases. */ if ( ! current_theme_supports( 'disable-layout-styles' ) ) { $gap_value = wp_sanitize_block_gap_value( $style_attr['spacing']['blockGap'] ?? null ); $fallback_gap_value = $block_type->supports['spacing']['blockGap']['__experimentalDefault'] ?? '0.5em'; $block_spacing = $style_attr['spacing'] ?? null; /* * If a block's block.json skips serialization for spacing or spacing.blockGap, * don't apply the user-defined value to the styles. */ $should_skip_gap_serialization = wp_should_skip_block_supports_serialization( $block_type, 'spacing', 'blockGap' ); $block_gap = $global_settings['spacing']['blockGap'] ?? null; $has_block_gap_support = isset( $block_gap ); // Get default blockGap value from global styles for use in layouts like grid. // Check style variation first, then block-specific styles, then fall back to root styles. $block_name = $block['blockName'] ?? ''; if ( null === $global_styles ) { $global_styles = wp_get_global_styles(); } // Check if the block has an active style variation with a blockGap value. // Only check the registry if the className contains a variation class to avoid unnecessary lookups. $variation_block_gap_value = null; $block_class_name = is_string( $block['attrs']['className'] ?? null ) ? $block['attrs']['className'] : ''; if ( $block_class_name && str_contains( $block_class_name, 'is-style-' ) && $block_name ) { $styles_registry = WP_Block_Styles_Registry::get_instance(); $registered_styles = $styles_registry->get_registered_styles_for_block( $block_name ); $variation_name = wp_get_block_style_variation_name_from_registered_style( $block_class_name, $registered_styles ); if ( $variation_name ) { $variation_block_gap_value = $global_styles['blocks'][ $block_name ]['variations'][ $variation_name ]['spacing']['blockGap'] ?? null; } } $global_block_gap_value = $variation_block_gap_value ?? $global_styles['blocks'][ $block_name ]['spacing']['blockGap'] ?? $global_styles['spacing']['blockGap'] ?? null; if ( null !== $global_block_gap_value ) { $fallback_gap_value = $global_block_gap_value; } $container_class_hash_input = array( $used_layout, $has_block_gap_support, $gap_value, $should_skip_gap_serialization, $fallback_gap_value, $block_spacing, ); foreach ( array_keys( $responsive_media_queries ) as $breakpoint ) { $viewport_style = $style_attr[ $breakpoint ] ?? null; if ( ! is_array( $viewport_style ) ) { continue; } $viewport_container_layout = wp_get_layout_container_values( $viewport_style['layout'] ?? null ); if ( ! empty( $viewport_container_layout ) ) { $container_class_hash_input[] = array( 'breakpoint' => $breakpoint, 'layout' => $viewport_container_layout, ); } if ( isset( $viewport_style['spacing']['blockGap'] ) ) { $container_class_hash_input[] = array( 'breakpoint' => $breakpoint, 'blockGap' => wp_sanitize_block_gap_value( $viewport_style['spacing']['blockGap'] ), ); } } /* * Generates a unique ID based on all the data required to obtain the * corresponding layout style. Keeps the CSS class names the same * even for different blocks on different places, as long as they have * the same layout definition. Makes the CSS class names stable across * paginations for features like the enhanced pagination of the Query block. */ $container_class = wp_unique_id_from_values( $container_class_hash_input, 'wp-container-' . sanitize_title( $block['blockName'] ) . '-is-layout-' ); $style = wp_get_layout_style( ".$container_class", $used_layout, $has_block_gap_support, $gap_value, $should_skip_gap_serialization, $fallback_gap_value, $block_spacing ); /* * Emit responsive container layout styles using the same $container_class * selector as the base layout so they target the inner block wrapper. */ foreach ( $responsive_media_queries as $breakpoint => $media_query ) { $viewport_style = $style_attr[ $breakpoint ] ?? null; if ( ! is_array( $viewport_style ) ) { continue; } $viewport_container_layout = wp_get_layout_container_values( $viewport_style['layout'] ?? null ); $has_viewport_layout = ! empty( $viewport_container_layout ); $has_viewport_block_gap = isset( $viewport_style['spacing']['blockGap'] ); if ( ! $has_viewport_layout && ! $has_viewport_block_gap ) { continue; } $viewport_gap_value = $has_viewport_block_gap ? wp_sanitize_block_gap_value( $viewport_style['spacing']['blockGap'] ) : $gap_value; $viewport_block_spacing = is_array( $viewport_style['spacing'] ?? null ) ? array_replace( is_array( $block_spacing ) ? $block_spacing : array(), $viewport_style['spacing'] ) : $block_spacing; $viewport_styles = wp_get_layout_style( ".$container_class", $used_layout, $has_block_gap_support, $viewport_gap_value, $should_skip_gap_serialization, $fallback_gap_value, $viewport_block_spacing, array( 'rules_group' => $media_query, 'viewport_overrides' => $viewport_container_layout, 'has_block_gap_override' => $has_viewport_block_gap, ) ); if ( ! empty( $viewport_styles ) && ! in_array( $container_class, $class_names, true ) ) { $class_names[] = $container_class; } } // Only add container class and enqueue block support styles if unique styles were generated. if ( ! empty( $style ) ) { $class_names[] = $container_class; } } // Add combined layout and block classname for global styles to hook onto. $split_block_name = explode( '/', $block['blockName'] ); $full_block_name = 'core' === $split_block_name[0] ? end( $split_block_name ) : implode( '-', $split_block_name ); $class_names[] = 'wp-block-' . $full_block_name . '-' . $layout_classname; // Add classes to the outermost HTML tag if necessary. if ( ! empty( $outer_class_names ) ) { foreach ( $outer_class_names as $outer_class_name ) { $processor->add_class( $outer_class_name ); } } /** * Attempts to refer to the inner-block wrapping element by its class attribute. * * When examining a block's inner content, if a block has inner blocks, then * the first content item will likely be a text (HTML) chunk immediately * preceding the inner blocks. The last HTML tag in that chunk would then be * an opening tag for an element that wraps the inner blocks. * * There's no reliable way to associate this wrapper in $block_content because * it may have changed during the rendering pipeline (as inner contents is * provided before rendering) and through previous filters. In many cases, * however, the `class` attribute will be a good-enough identifier, so this * code finds the last tag in that chunk and stores the `class` attribute * so that it can be used later when working through the rendered block output * to identify the wrapping element and add the remaining class names to it. * * It's also possible that no inner block wrapper even exists. If that's the * case this code could apply the class names to an invalid element. * * Example: * * $block['innerBlocks'] = array( $list_item ); * $block['innerContent'] = array( '' ); * * // After rendering, the initial contents may have been modified by other renderers or filters. * $block_content = << *
It's a list!
* * HTML; * * Although it is possible that the original block-wrapper classes are changed in $block_content * from how they appear in $block['innerContent'], it's likely that the original class attributes * are still present in the wrapper as they are in this example. Frequently, additional classes * will also be present; rarely should classes be removed. * * @todo Find a better way to match the first inner block. If it's possible to identify where the * first inner block starts, then it will be possible to find the last tag before it starts * and then that tag, if an opening tag, can be solidly identified as a wrapping element. * Can some unique value or class or ID be added to the inner blocks when they process * so that they can be extracted here safely without guessing? Can the block rendering function * return information about where the rendered inner blocks start? * * @var string|null */ $inner_block_wrapper_classes = null; $first_chunk = $block['innerContent'][0] ?? null; if ( is_string( $first_chunk ) && count( $block['innerContent'] ) > 1 ) { $first_chunk_processor = new WP_HTML_Tag_Processor( $first_chunk ); /* * Use a stack to track open elements as tags are visited. Void elements * (those without a matching closing tag) are excluded so they don't * accumulate on the stack. At the end of the chunk, every element still * on the stack is unclosed — meaning its closing tag lives in a later * innerContent entry alongside the inner blocks, which makes it the * inner-block container. Elements that open and close within this chunk * are siblings that precede the inner blocks and should be ignored. * The last unclosed element with a class attribute is the best candidate * for the inner-block wrapper. */ $tag_stack = array(); while ( $first_chunk_processor->next_tag( array( 'tag_closers' => 'visit' ) ) ) { if ( $first_chunk_processor->is_tag_closer() ) { array_pop( $tag_stack ); } elseif ( ! WP_HTML_Processor::is_void( $first_chunk_processor->get_tag() ) ) { $tag_stack[] = $first_chunk_processor->get_attribute( 'class' ); } } foreach ( array_reverse( $tag_stack ) as $class_attribute ) { if ( is_string( $class_attribute ) && ! empty( $class_attribute ) ) { $inner_block_wrapper_classes = $class_attribute; break; } } } /* * If necessary, advance to what is likely to be an inner block wrapper tag. * * This advances until it finds the first tag containing the original class * attribute from above. If none is found it will scan to the end of the block * and fail to add any class names. * * If there is no block wrapper it won't advance at all, in which case the * class names will be added to the first and outermost tag of the block. * For cases where this outermost tag is the only tag surrounding inner * blocks then the outer wrapper and inner wrapper are the same. */ do { if ( ! $inner_block_wrapper_classes ) { break; } $class_attribute = $processor->get_attribute( 'class' ); if ( is_string( $class_attribute ) && str_contains( $class_attribute, $inner_block_wrapper_classes ) ) { break; } } while ( $processor->next_tag() ); // Add the remaining class names. foreach ( $class_names as $class_name ) { $processor->add_class( $class_name ); } return $processor->get_updated_html(); } /** * Check if the parent block exists and if it has a layout attribute. * If it does, add the parent layout to the parsed block * * @since 6.6.0 * @access private * * @param array $parsed_block The parsed block. * @param array $source_block The source block. * @param WP_Block $parent_block The parent block. * @return array The parsed block with parent layout attribute if it exists. */ function wp_add_parent_layout_to_parsed_block( $parsed_block, $source_block, $parent_block ) { if ( $parent_block && isset( $parent_block->parsed_block['attrs']['layout'] ) ) { $parsed_block['parentLayout'] = $parent_block->parsed_block['attrs']['layout']; } return $parsed_block; } add_filter( 'render_block_data', 'wp_add_parent_layout_to_parsed_block', 10, 3 ); // Register the block support. WP_Block_Supports::get_instance()->register( 'layout', array( 'register_attribute' => 'wp_register_layout_support', ) ); add_filter( 'render_block', 'wp_render_layout_support_flag', 10, 2 ); /** * For themes without theme.json file, make sure * to restore the inner div for the group block * to avoid breaking styles relying on that div. * * @since 5.8.0 * @since 6.6.1 Removed inner container from Grid variations. * @access private * * @param string $block_content Rendered block content. * @param array $block Block object. * @return string Filtered block content. */ function wp_restore_group_inner_container( $block_content, $block ) { $tag_name = $block['attrs']['tagName'] ?? 'div'; $group_with_inner_container_regex = sprintf( '/(^\s*<%1$s\b[^>]*wp-block-group(\s|")[^>]*>)(\s*]*wp-block-group__inner-container(\s|")[^>]*>)((.|\S|\s)*)/U', preg_quote( $tag_name, '/' ) ); if ( wp_theme_has_theme_json() || 1 === preg_match( $group_with_inner_container_regex, $block_content ) || ( isset( $block['attrs']['layout']['type'] ) && ( 'flex' === $block['attrs']['layout']['type'] || 'grid' === $block['attrs']['layout']['type'] ) ) ) { return $block_content; } /* * This filter runs after the layout classnames have been added to the block, so they * have to be removed from the outer wrapper and then added to the inner. */ $layout_classes = array(); $processor = new WP_HTML_Tag_Processor( $block_content ); if ( $processor->next_tag( array( 'class_name' => 'wp-block-group' ) ) ) { foreach ( $processor->class_list() as $class_name ) { if ( str_contains( $class_name, 'is-layout-' ) ) { $layout_classes[] = $class_name; $processor->remove_class( $class_name ); } } } $content_without_layout_classes = $processor->get_updated_html(); $replace_regex = sprintf( '/(^\s*<%1$s\b[^>]*wp-block-group[^>]*>)(.*)(<\/%1$s>\s*$)/ms', preg_quote( $tag_name, '/' ) ); $updated_content = preg_replace_callback( $replace_regex, static function ( $matches ) { return $matches[1] . '
' . $matches[2] . '
' . $matches[3]; }, $content_without_layout_classes ); // Add layout classes to inner wrapper. if ( ! empty( $layout_classes ) ) { $processor = new WP_HTML_Tag_Processor( $updated_content ); if ( $processor->next_tag( array( 'class_name' => 'wp-block-group__inner-container' ) ) ) { foreach ( $layout_classes as $class_name ) { $processor->add_class( $class_name ); } } $updated_content = $processor->get_updated_html(); } return $updated_content; } add_filter( 'render_block_core/group', 'wp_restore_group_inner_container', 10, 2 ); /** * For themes without theme.json file, make sure * to restore the outer div for the aligned image block * to avoid breaking styles relying on that div. * * @since 6.0.0 * @access private * * @param string $block_content Rendered block content. * @param array $block Block object. * @return string Filtered block content. */ function wp_restore_image_outer_container( $block_content, $block ) { if ( wp_theme_has_theme_json() ) { return $block_content; } $figure_processor = new WP_HTML_Tag_Processor( $block_content ); if ( ! $figure_processor->next_tag( 'FIGURE' ) || ! $figure_processor->has_class( 'wp-block-image' ) || ! ( $figure_processor->has_class( 'alignleft' ) || $figure_processor->has_class( 'aligncenter' ) || $figure_processor->has_class( 'alignright' ) ) ) { return $block_content; } /* * The next section of code wraps the existing figure in a new DIV element. * While doing it, it needs to transfer the layout and the additional CSS * class names from the original figure upward to the wrapper. * * Example: * * // From this… * *
… * * // To this… *
… */ $wrapper_processor = new WP_HTML_Tag_Processor( '
' ); $wrapper_processor->next_token(); $wrapper_processor->set_attribute( 'class', is_string( $block['attrs']['className'] ?? null ) ? "wp-block-image {$block['attrs']['className']}" : 'wp-block-image' ); // And remove them from the existing content; it has been transferred upward. $figure_processor->remove_class( 'wp-block-image' ); foreach ( $wrapper_processor->class_list() as $class_name ) { $figure_processor->remove_class( $class_name ); } return "{$wrapper_processor->get_updated_html()}{$figure_processor->get_updated_html()}
"; } add_filter( 'render_block_core/image', 'wp_restore_image_outer_container', 10, 2 ); Page not found – My Blog