ckGap' ); $block_gap = isset( $global_settings['spacing']['blockGap'] ) ? $global_settings['spacing']['blockGap'] : null; $has_block_gap_support = isset( $block_gap ); $style = wp_get_layout_style( ".$container_class.$container_class", $used_layout, $has_block_gap_support, $gap_value, $should_skip_gap_serialization, $fallback_gap_value, $block_spacing ); // 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. $block_name = explode( '/', $block['blockName'] ); $class_names[] = 'wp-block-' . end( $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 = isset( $block['innerContent'][0] ) ? $block['innerContent'][0] : null; if ( is_string( $first_chunk ) && count( $block['innerContent'] ) > 1 ) { $first_chunk_processor = new WP_HTML_Tag_Processor( $first_chunk ); while ( $first_chunk_processor->next_tag() ) { $class_attribute = $first_chunk_processor->get_attribute( 'class' ); if ( is_string( $class_attribute ) && ! empty( $class_attribute ) ) { $inner_block_wrapper_classes = $class_attribute; } } } /* * 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; } if ( false !== strpos( $processor->get_attribute( 'class' ), $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(); } // 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 * @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 = isset( $block['attrs']['tagName'] ) ? $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'] ) ) { return $block_content; } $replace_regex = sprintf( '/(^\s*<%1$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]; }, $block_content ); 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 ) { $image_with_align = " /# 1) everything up to the class attribute contents ( ^\s* ]* \bclass= [\"'] ) # 2) the class attribute contents ( [^\"']* \bwp-block-image\b [^\"']* \b(?:alignleft|alignright|aligncenter)\b [^\"']* ) # 3) everything after the class attribute contents ( [\"'] [^>]* > .* <\/figure> )/iUx"; if ( wp_theme_has_theme_json() || 0 === preg_match( $image_with_align, $block_content, $matches ) ) { return $block_content; } $wrapper_classnames = array( 'wp-block-image' ); // If the block has a classNames attribute these classnames need to be removed from the content and added back // to the new wrapper div also. if ( ! empty( $block['attrs']['className'] ) ) { $wrapper_classnames = array_merge( $wrapper_classnames, explode( ' ', $block['attrs']['className'] ) ); } $content_classnames = explode( ' ', $matches[2] ); $filtered_content_classnames = array_diff( $content_classnames, $wrapper_classnames ); return '
' . $matches[1] . implode( ' ', $filtered_content_classnames ) . $matches[3] . '
'; } add_filter( 'render_block_core/image', 'wp_restore_image_outer_container', 10, 2 );