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layout.php
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<?php /** * Layout block support flag. * * @package WordPress * @since 5.8.0 */ /** * Returns layout definitions, keyed by layout type. * * Provides a common definition of slugs, classnames, base styles, and spacing styles for each layout type. * When making changes or additions to layout definitions, the corresponding JavaScript definitions should * also be updated. * * @since 6.3.0 * @since 6.6.0 Updated specificity for compatibility with 0-1-0 global styles specificity. * @access private * * @return array[] Layout definitions. */ function wp_get_layout_definitions() { $layout_definitions = array( 'default' => array( 'name' => 'default', 'slug' => 'flow', 'className' => 'is-layout-flow', 'baseStyles' => array( array( 'selector' => ' > .alignleft', 'rules' => array( 'float' => 'left', 'margin-inline-start' => '0', 'margin-inline-end' => '2em', ), ), array( 'selector' => ' > .alignright', 'rules' => array( 'float' => 'right', 'margin-inline-start' => '2em', 'margin-inline-end' => '0', ), ), array( 'selector' => ' > .aligncenter', 'rules' => array( 'margin-left' => 'auto !important', 'margin-right' => 'auto !important', ), ), ), 'spacingStyles' => array( array( 'selector' => ' > :first-child', 'rules' => array( 'margin-block-start' => '0', ), ), array( 'selector' => ' > :last-child', 'rules' => array( 'margin-block-end' => '0', ), ), array( 'selector' => ' > *', 'rules' => array( 'margin-block-start' => null, 'margin-block-end' => '0', ), ), ), ), 'constrained' => array( 'name' => 'constrained', 'slug' => 'constrained', 'className' => 'is-layout-constrained', 'baseStyles' => array( array( 'selector' => ' > .alignleft', 'rules' => array( 'float' => 'left', 'margin-inline-start' => '0', 'margin-inline-end' => '2em', ), ), array( 'selector' => ' > .alignright', 'rules' => array( 'float' => 'right', 'margin-inline-start' => '2em', 'margin-inline-end' => '0', ), ), array( 'selector' => ' > .aligncenter', 'rules' => array( 'margin-left' => 'auto !important', 'margin-right' => 'auto !important', ), ), array( 'selector' => ' > :where(:not(.alignleft):not(.alignright):not(.alignfull))', 'rules' => array( 'max-width' => 'var(--wp--style--global--content-size)', 'margin-left' => 'auto !important', 'margin-right' => 'auto !important', ), ), array( 'selector' => ' > .alignwide', 'rules' => array( 'max-width' => 'var(--wp--style--global--wide-size)', ), ), ), 'spacingStyles' => array( array( 'selector' => ' > :first-child', 'rules' => array( 'margin-block-start' => '0', ), ), array( 'selector' => ' > :last-child', 'rules' => array( 'margin-block-end' => '0', ), ), array( 'selector' => ' > *', 'rules' => array( 'margin-block-start' => null, 'margin-block-end' => '0', ), ), ), ), 'flex' => array( 'name' => 'flex', 'slug' => 'flex', 'className' => 'is-layout-flex', 'displayMode' => 'flex', 'baseStyles' => array( array( 'selector' => '', 'rules' => array( 'flex-wrap' => 'wrap', 'align-items' => 'center', ), ), array( 'selector' => ' > :is(*, div)', // :is(*, div) instead of just * increases the specificity by 001. 'rules' => array( 'margin' => '0', ), ), ), 'spacingStyles' => array( array( 'selector' => '', 'rules' => array( 'gap' => null, ), ), ), ), 'grid' => array( 'name' => 'grid', 'slug' => 'grid', 'className' => 'is-layout-grid', 'displayMode' => 'grid', 'baseStyles' => array( array( 'selector' => ' > :is(*, div)', // :is(*, div) instead of just * increases the specificity by 001. 'rules' => array( 'margin' => '0', ), ), ), 'spacingStyles' => array( array( 'selector' => '', 'rules' => array( 'gap' => null, ), ), ), ), ); return $layout_definitions; } /** * Registers the layout block attribute for block types that support it. * * @since 5.8.0 * @since 6.3.0 Check for layout support via the `layout` key with fallback to `__experimentalLayout`. * @access private * * @param WP_Block_Type $block_type Block Type. */ function wp_register_layout_support( $block_type ) { $support_layout = block_has_support( $block_type, 'layout', false ) || block_has_support( $block_type, '__experimentalLayout', false ); if ( $support_layout ) { if ( ! $block_type->attributes ) { $block_type->attributes = array(); } if ( ! array_key_exists( 'layout', $block_type->attributes ) ) { $block_type->attributes['layout'] = array( 'type' => 'object', ); } } } /** * Generates the CSS corresponding to the provided layout. * * @since 5.9.0 * @since 6.1.0 Added `$block_spacing` param, use style engine to enqueue styles. * @since 6.3.0 Added grid layout type. * @since 6.6.0 Removed duplicated selector from layout styles. * Enabled negative margins for alignfull children of blocks with custom padding. * @access private * * @param string $selector CSS selector. * @param array $layout Layout object. The one that is passed has already checked * the existence of default block layout. * @param bool $has_block_gap_support Optional. Whether the theme has support for the block gap. Default false. * @param string|string[]|null $gap_value Optional. The block gap value to apply. Default null. * @param bool $should_skip_gap_serialization Optional. Whether to skip applying the user-defined value set in the editor. Default false. * @param string $fallback_gap_value Optional. The block gap value to apply. Default '0.5em'. * @param array|null $block_spacing Optional. Custom spacing set on the block. Default null. * @return string CSS styles on success. Else, empty string. */ function wp_get_layout_style( $selector, $layout, $has_block_gap_support = false, $gap_value = null, $should_skip_gap_serialization = false, $fallback_gap_value = '0.5em', $block_spacing = null ) { $layout_type = isset( $layout['type'] ) ? $layout['type'] : 'default'; $layout_styles = array(); if ( 'default' === $layout_type ) { if ( $has_block_gap_support ) { if ( is_array( $gap_value ) ) { $gap_value = isset( $gap_value['top'] ) ? $gap_value['top'] : null; } if ( null !== $gap_value && ! $should_skip_gap_serialization ) { // Get spacing CSS variable from preset value if provided. if ( is_string( $gap_value ) && str_contains( $gap_value, 'var:preset|spacing|' ) ) { $index_to_splice = strrpos( $gap_value, '|' ) + 1; $slug = _wp_to_kebab_case( substr( $gap_value, $index_to_splice ) ); $gap_value = "var(--wp--preset--spacing--$slug)"; } array_push( $layout_styles, array( 'selector' => "$selector > *", 'declarations' => array( 'margin-block-start' => '0', 'margin-block-end' => '0', ), ), array( 'selector' => "$selector > * + *", 'declarations' => array( 'margin-block-start' => $gap_value, 'margin-block-end' => '0', ), ) ); } } } elseif ( 'constrained' === $layout_type ) { $content_size = isset( $layout['contentSize'] ) ? $layout['contentSize'] : ''; $wide_size = isset( $layout['wideSize'] ) ? $layout['wideSize'] : ''; $justify_content = isset( $layout['justifyContent'] ) ? $layout['justifyContent'] : 'center'; $all_max_width_value = $content_size ? $content_size : $wide_size; $wide_max_width_value = $wide_size ? $wide_size : $content_size; // Make sure there is a single CSS rule, and all tags are stripped for security. $all_max_width_value = safecss_filter_attr( explode( ';', $all_max_width_value )[0] ); $wide_max_width_value = safecss_filter_attr( explode( ';', $wide_max_width_value )[0] ); $margin_left = 'left' === $justify_content ? '0 !important' : 'auto !important'; $margin_right = 'right' === $justify_content ? '0 !important' : 'auto !important'; if ( $content_size || $wide_size ) { array_push( $layout_styles, array( 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 'declarations' => array( 'max-width' => $all_max_width_value, 'margin-left' => $margin_left, 'margin-right' => $margin_right, ), ), array( 'selector' => "$selector > .alignwide", 'declarations' => array( 'max-width' => $wide_max_width_value ), ), array( 'selector' => "$selector .alignfull", 'declarations' => array( 'max-width' => 'none' ), ) ); } if ( isset( $block_spacing ) ) { $block_spacing_values = wp_style_engine_get_styles( array( 'spacing' => $block_spacing, ) ); /* * Handle negative margins for alignfull children of blocks with custom padding set. * They're added separately because padding might only be set on one side. */ if ( isset( $block_spacing_values['declarations']['padding-right'] ) ) { $padding_right = $block_spacing_values['declarations']['padding-right']; // Add unit if 0. if ( '0' === $padding_right ) { $padding_right = '0px'; } $layout_styles[] = array( 'selector' => "$selector > .alignfull", 'declarations' => array( 'margin-right' => "calc($padding_right * -1)" ), ); } if ( isset( $block_spacing_values['declarations']['padding-left'] ) ) { $padding_left = $block_spacing_values['declarations']['padding-left']; // Add unit if 0. if ( '0' === $padding_left ) { $padding_left = '0px'; } $layout_styles[] = array( 'selector' => "$selector > .alignfull", 'declarations' => array( 'margin-left' => "calc($padding_left * -1)" ), ); } } if ( 'left' === $justify_content ) { $layout_styles[] = array( 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 'declarations' => array( 'margin-left' => '0 !important' ), ); } if ( 'right' === $justify_content ) { $layout_styles[] = array( 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 'declarations' => array( 'margin-right' => '0 !important' ), ); } if ( $has_block_gap_support ) { if ( is_array( $gap_value ) ) { $gap_value = isset( $gap_value['top'] ) ? $gap_value['top'] : null; } if ( null !== $gap_value && ! $should_skip_gap_serialization ) { // Get spacing CSS variable from preset value if provided. if ( is_string( $gap_value ) && str_contains( $gap_value, 'var:preset|spacing|' ) ) { $index_to_splice = strrpos( $gap_value, '|' ) + 1; $slug = _wp_to_kebab_case( substr( $gap_value, $index_to_splice ) ); $gap_value = "var(--wp--preset--spacing--$slug)"; } array_push( $layout_styles, array( 'selector' => "$selector > *", 'declarations' => array( 'margin-block-start' => '0', 'margin-block-end' => '0', ), ), array( 'selector' => "$selector > * + *", 'declarations' => array( 'margin-block-start' => $gap_value, 'margin-block-end' => '0', ), ) ); } } } elseif ( 'flex' === $layout_type ) { $layout_orientation = isset( $layout['orientation'] ) ? $layout['orientation'] : 'horizontal'; $justify_content_options = array( 'left' => 'flex-start', 'right' => 'flex-end', 'center' => 'center', ); $vertical_alignment_options = array( 'top' => 'flex-start', 'center' => 'center', 'bottom' => 'flex-end', ); if ( 'horizontal' === $layout_orientation ) { $justify_content_options += array( 'space-between' => 'space-between' ); $vertical_alignment_options += array( 'stretch' => 'stretch' ); } else { $justify_content_options += array( 'stretch' => 'stretch' ); $vertical_alignment_options += array( 'space-between' => 'space-between' ); } if ( ! empty( $layout['flexWrap'] ) && 'nowrap' === $layout['flexWrap'] ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'flex-wrap' => 'nowrap' ), ); } if ( $has_block_gap_support && isset( $gap_value ) ) { $combined_gap_value = ''; $gap_sides = is_array( $gap_value ) ? array( 'top', 'left' ) : array( 'top' ); foreach ( $gap_sides as $gap_side ) { $process_value = $gap_value; if ( is_array( $gap_value ) ) { $process_value = isset( $gap_value[ $gap_side ] ) ? $gap_value[ $gap_side ] : $fallback_gap_value; } // Get spacing CSS variable from preset value if provided. if ( is_string( $process_value ) && str_contains( $process_value, 'var:preset|spacing|' ) ) { $index_to_splice = strrpos( $process_value, '|' ) + 1; $slug = _wp_to_kebab_case( substr( $process_value, $index_to_splice ) ); $process_value = "var(--wp--preset--spacing--$slug)"; } $combined_gap_value .= "$process_value "; } $gap_value = trim( $combined_gap_value ); if ( null !== $gap_value && ! $should_skip_gap_serialization ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'gap' => $gap_value ), ); } } if ( 'horizontal' === $layout_orientation ) { /* * Add this style only if is not empty for backwards compatibility, * since we intend to convert blocks that had flex layout implemented * by custom css. */ if ( ! empty( $layout['justifyContent'] ) && array_key_exists( $layout['justifyContent'], $justify_content_options ) ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'justify-content' => $justify_content_options[ $layout['justifyContent'] ] ), ); } if ( ! empty( $layout['verticalAlignment'] ) && array_key_exists( $layout['verticalAlignment'], $vertical_alignment_options ) ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'align-items' => $vertical_alignment_options[ $layout['verticalAlignment'] ] ), ); } } else { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'flex-direction' => 'column' ), ); if ( ! empty( $layout['justifyContent'] ) && array_key_exists( $layout['justifyContent'], $justify_content_options ) ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'align-items' => $justify_content_options[ $layout['justifyContent'] ] ), ); } else { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'align-items' => 'flex-start' ), ); } if ( ! empty( $layout['verticalAlignment'] ) && array_key_exists( $layout['verticalAlignment'], $vertical_alignment_options ) ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'justify-content' => $vertical_alignment_options[ $layout['verticalAlignment'] ] ), ); } } } elseif ( 'grid' === $layout_type ) { if ( ! empty( $layout['columnCount'] ) ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'grid-template-columns' => 'repeat(' . $layout['columnCount'] . ', minmax(0, 1fr))' ), ); } else { $minimum_column_width = ! empty( $layout['minimumColumnWidth'] ) ? $layout['minimumColumnWidth'] : '12rem'; $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'grid-template-columns' => 'repeat(auto-fill, minmax(min(' . $minimum_column_width . ', 100%), 1fr))', 'container-type' => 'inline-size', ), ); } if ( $has_block_gap_support && isset( $gap_value ) ) { $combined_gap_value = ''; $gap_sides = is_array( $gap_value ) ? array( 'top', 'left' ) : array( 'top' ); foreach ( $gap_sides as $gap_side ) { $process_value = $gap_value; if ( is_array( $gap_value ) ) { $process_value = isset( $gap_value[ $gap_side ] ) ? $gap_value[ $gap_side ] : $fallback_gap_value; } // Get spacing CSS variable from preset value if provided. if ( is_string( $process_value ) && str_contains( $process_value, 'var:preset|spacing|' ) ) { $index_to_splice = strrpos( $process_value, '|' ) + 1; $slug = _wp_to_kebab_case( substr( $process_value, $index_to_splice ) ); $process_value = "var(--wp--preset--spacing--$slug)"; } $combined_gap_value .= "$process_value "; } $gap_value = trim( $combined_gap_value ); if ( null !== $gap_value && ! $should_skip_gap_serialization ) { $layout_styles[] = array( 'selector' => $selector, 'declarations' => array( 'gap' => $gap_value ), ); } } } if ( ! empty( $layout_styles ) ) { /* * Add to the style engine store to enqueue and render layout styles. * Return compiled layout styles to retain backwards compatibility. * Since https://github.com/WordPress/gutenberg/pull/42452, * wp_enqueue_block_support_styles is no longer called in this block supports file. */ return wp_style_engine_get_stylesheet_from_css_rules( $layout_styles, array( 'context' => 'block-supports', 'prettify' => false, ) ); } return ''; } /** * Renders the layout config to the block wrapper. * * @since 5.8.0 * @since 6.3.0 Adds compound class to layout wrapper for global spacing styles. * @since 6.3.0 Check for layout support via the `layout` key with fallback to `__experimentalLayout`. * @since 6.6.0 Removed duplicate container class from layout styles. * @access private * * @param string $block_content Rendered block content. * @param array $block Block object. * @return string Filtered block content. */ function wp_render_layout_support_flag( $block_content, $block ) { $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); $block_supports_layout = block_has_support( $block_type, 'layout', false ) || block_has_support( $block_type, '__experimentalLayout', false ); $child_layout = isset( $block['attrs']['style']['layout'] ) ? $block['attrs']['style']['layout'] : null; if ( ! $block_supports_layout && ! $child_layout ) { return $block_content; } $outer_class_names = array(); // Child layout specific logic. if ( $child_layout ) { /* * Generates a unique class for child block layout styles. * * To ensure consistent class generation across different page renders, * only properties that affect layout styling are used. These properties * come from `$block['attrs']['style']['layout']` and `$block['parentLayout']`. * * As long as these properties coincide, the generated class will be the same. */ $container_content_class = wp_unique_id_from_values( array( 'layout' => array_intersect_key( $block['attrs']['style']['layout'] ?? array(), array_flip( array( 'selfStretch', 'flexSize', 'columnStart', 'columnSpan', 'rowStart', 'rowSpan' ) ) ), 'parentLayout' => array_intersect_key( $block['parentLayout'] ?? array(), array_flip( array( 'minimumColumnWidth', 'columnCount' ) ) ), ), 'wp-container-content-' ); $child_layout_declarations = array(); $child_layout_styles = array(); $self_stretch = isset( $child_layout['selfStretch'] ) ? $child_layout['selfStretch'] : null; if ( 'fixed' === $self_stretch && isset( $child_layout['flexSize'] ) ) { $child_layout_declarations['flex-basis'] = $child_layout['flexSize']; $child_layout_declarations['box-sizing'] = 'border-box'; } elseif ( 'fill' === $self_stretch ) { $child_layout_declarations['flex-grow'] = '1'; } if ( isset( $child_layout['columnSpan'] ) ) { $column_span = $child_layout['columnSpan']; $child_layout_declarations['grid-column'] = "span $column_span"; } if ( isset( $child_layout['rowSpan'] ) ) { $row_span = $child_layout['rowSpan']; $child_layout_declarations['grid-row'] = "span $row_span"; } $child_layout_styles[] = array( 'selector' => ".$container_content_class", 'declarations' => $child_layout_declarations, ); /* * If columnSpan is set, and the parent grid is responsive, i.e. if it has a minimumColumnWidth set, * the columnSpan should be removed on small grids. If there's a minimumColumnWidth, the grid is responsive. * But if the minimumColumnWidth value wasn't changed, it won't be set. In that case, if columnCount doesn't * exist, we can assume that the grid is responsive. */ if ( isset( $child_layout['columnSpan'] ) && ( isset( $block['parentLayout']['minimumColumnWidth'] ) || ! isset( $block['parentLayout']['columnCount'] ) ) ) { $column_span_number = floatval( $child_layout['columnSpan'] ); $parent_column_width = isset( $block['parentLayout']['minimumColumnWidth'] ) ? $block['parentLayout']['minimumColumnWidth'] : '12rem'; $parent_column_value = floatval( $parent_column_width ); $parent_column_unit = explode( $parent_column_value, $parent_column_width ); /* * If there is no unit, the width has somehow been mangled so we reset both unit and value * to defaults. * Additionally, the unit should be one of px, rem or em, so that also needs to be checked. */ if ( count( $parent_column_unit ) <= 1 ) { $parent_column_unit = 'rem'; $parent_column_value = 12; } else { $parent_column_unit = $parent_column_unit[1]; if ( ! in_array( $parent_column_unit, array( 'px', 'rem', 'em' ), true ) ) { $parent_column_unit = 'rem'; } } /* * A default gap value is used for this computation because custom gap values may not be * viable to use in the computation of the container query value. */ $default_gap_value = 'px' === $parent_column_unit ? 24 : 1.5; $container_query_value = $column_span_number * $parent_column_value + ( $column_span_number - 1 ) * $default_gap_value; $container_query_value = $container_query_value . $parent_column_unit; $child_layout_styles[] = array( 'rules_group' => "@container (max-width: $container_query_value )", 'selector' => ".$container_content_class", 'declarations' => array( 'grid-column' => '1/-1', ), ); } /* * Add to the style engine store to enqueue and render layout styles. * Return styles here just to check if any exist. */ $child_css = wp_style_engine_get_stylesheet_from_css_rules( $child_layout_styles, array( 'context' => 'block-supports', '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; } $global_settings = wp_get_global_settings(); $fallback_layout = isset( $block_type->supports['layout']['default'] ) ? $block_type->supports['layout']['default'] : array(); if ( empty( $fallback_layout ) ) { $fallback_layout = isset( $block_type->supports['__experimentalLayout']['default'] ) ? $block_type->supports['__experimentalLayout']['default'] : array(); } $used_layout = isset( $block['attrs']['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 = isset( $global_settings['useRootPaddingAwareAlignments'] ) ? $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 = isset( $layout_definitions[ $used_layout['type'] ]['className'] ) ? $layout_definitions[ $used_layout['type'] ]['className'] : ''; } else { $layout_classname = isset( $layout_definitions['default']['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 = isset( $block['attrs']['style']['spacing']['blockGap'] ) ? $block['attrs']['style']['spacing']['blockGap'] : null; /* * Skip if gap value contains unsupported characters. * Regex for CSS value borrowed from `safecss_filter_attr`, and used here * to only match against the value, not the CSS attribute. */ if ( is_array( $gap_value ) ) { foreach ( $gap_value as $key => $value ) { $gap_value[ $key ] = $value && preg_match( '%[\\\(&=}]|/\*%', $value ) ? null : $value; } } else { $gap_value = $gap_value && preg_match( '%[\\\(&=}]|/\*%', $gap_value ) ? null : $gap_value; } $fallback_gap_value = isset( $block_type->supports['spacing']['blockGap']['__experimentalDefault'] ) ? $block_type->supports['spacing']['blockGap']['__experimentalDefault'] : '0.5em'; $block_spacing = isset( $block['attrs']['style']['spacing'] ) ? $block['attrs']['style']['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 = isset( $global_settings['spacing']['blockGap'] ) ? $global_settings['spacing']['blockGap'] : null; $has_block_gap_support = isset( $block_gap ); /* * 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( array( $used_layout, $has_block_gap_support, $gap_value, $should_skip_gap_serialization, $fallback_gap_value, $block_spacing, ), '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 ); // 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( '<ul class="list-wrapper is-unordered">', null, '</ul>' ); * * // After rendering, the initial contents may have been modified by other renderers or filters. * $block_content = <<<HTML * <figure> * <ul class="annotated-list list-wrapper is-unordered"> * <li>Code</li> * </ul><figcaption>It's a list!</figcaption> * </figure> * 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; } $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 = isset( $block['attrs']['tagName'] ) ? $block['attrs']['tagName'] : 'div'; $group_with_inner_container_regex = sprintf( '/(^\s*<%1$s\b[^>]*wp-block-group(\s|")[^>]*>)(\s*<div\b[^>]*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] . '<div class="wp-block-group__inner-container">' . $matches[2] . '</div>' . $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… * <!-- wp:image {"className":"hires"} --> * <figure class="wp-block-image wide hires">… * * // To this… * <div class="wp-block-image hires"><figure class="wide">… */ $wrapper_processor = new WP_HTML_Tag_Processor( '<div>' ); $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()}</div>"; } add_filter( 'render_block_core/image', 'wp_restore_image_outer_container', 10, 2 );