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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
commita415c29efee45520ae252d2aa28f1083a521cd7b (patch)
treef4ade4b6668ecc0765de7e1424f7c1427ad433ff /wp-includes/block-supports/layout.php
parentInitial commit. (diff)
downloadwordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.tar.xz
wordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.zip
Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wp-includes/block-supports/layout.php')
-rw-r--r--wp-includes/block-supports/layout.php961
1 files changed, 961 insertions, 0 deletions
diff --git a/wp-includes/block-supports/layout.php b/wp-includes/block-supports/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
+ * @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:first-child',
+ 'rules' => array(
+ 'margin-block-start' => '0',
+ ),
+ ),
+ array(
+ 'selector' => ' > :last-child: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:first-child',
+ 'rules' => array(
+ 'margin-block-start' => '0',
+ ),
+ ),
+ array(
+ 'selector' => ' > :last-child: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' => ' > *',
+ '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' => ' > *',
+ '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.
+ * @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' => "$selector$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'];
+ $layout_styles[] = array(
+ 'selector' => "$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'];
+ $layout_styles[] = array(
+ 'selector' => "$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' => "$selector$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))' ),
+ );
+ }
+
+ 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`.
+ * @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 );
+ $layout_from_parent = isset( $block['attrs']['style']['layout']['selfStretch'] ) ? $block['attrs']['style']['layout']['selfStretch'] : null;
+
+ if ( ! $block_supports_layout && ! $layout_from_parent ) {
+ return $block_content;
+ }
+
+ $outer_class_names = array();
+
+ if ( 'fixed' === $layout_from_parent || 'fill' === $layout_from_parent ) {
+ $container_content_class = wp_unique_id( 'wp-container-content-' );
+
+ $child_layout_styles = array();
+
+ if ( 'fixed' === $layout_from_parent && isset( $block['attrs']['style']['layout']['flexSize'] ) ) {
+ $child_layout_styles[] = array(
+ 'selector' => ".$container_content_class",
+ 'declarations' => array(
+ 'flex-basis' => $block['attrs']['style']['layout']['flexSize'],
+ 'box-sizing' => 'border-box',
+ ),
+ );
+ } elseif ( 'fill' === $layout_from_parent ) {
+ $child_layout_styles[] = array(
+ 'selector' => ".$container_content_class",
+ 'declarations' => array(
+ 'flex-grow' => '1',
+ ),
+ );
+ }
+
+ wp_style_engine_get_stylesheet_from_css_rules(
+ $child_layout_styles,
+ array(
+ 'context' => 'block-supports',
+ 'prettify' => false,
+ )
+ );
+
+ $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();
+ }
+
+ $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();
+
+ /*
+ * Uses an incremental ID that is independent per prefix to make sure that
+ * rendering different numbers of blocks doesn't affect the IDs of other
+ * blocks. Makes the CSS class names stable across paginations
+ * for features like the enhanced pagination of the Query block.
+ */
+ $container_class = wp_unique_prefixed_id(
+ 'wp-container-' . sanitize_title( $block['blockName'] ) . '-layout-'
+ );
+
+ // 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 );
+
+ $style = wp_get_layout_style(
+ ".$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( '<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;
+ }
+
+ 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*<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'] )
+ ) {
+ 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] . '<div class="wp-block-group__inner-container">' . $matches[2] . '</div>' . $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*
+ <figure\b
+ [^>]*
+ \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 '<div class="' . implode( ' ', $wrapper_classnames ) . '">' . $matches[1] . implode( ' ', $filtered_content_classnames ) . $matches[3] . '</div>';
+}
+
+add_filter( 'render_block_core/image', 'wp_restore_image_outer_container', 10, 2 );