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<?php
/**
* Layout block support flag.
*
* @package WordPress
* @since 5.8.0
*/
/**
* Registers the layout block attribute for block types that support it.
*
* @since 5.8.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_layout_support( $block_type ) {
$support_layout = block_has_support( $block_type, array( '__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.
* @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' );
}
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 = is_string( $gap_value ) ? $gap_value : _wp_array_get( $gap_value, array( $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_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
* @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'] );
$support_layout = block_has_support( $block_type, array( '__experimentalLayout' ), false );
if ( ! $support_layout ) {
return $block_content;
}
$block_gap = wp_get_global_settings( array( 'spacing', 'blockGap' ) );
$global_layout_settings = wp_get_global_settings( array( 'layout' ) );
$has_block_gap_support = isset( $block_gap ) ? null !== $block_gap : false;
$default_block_layout = _wp_array_get( $block_type->supports, array( '__experimentalLayout', 'default' ), array() );
$used_layout = isset( $block['attrs']['layout'] ) ? $block['attrs']['layout'] : $default_block_layout;
if ( isset( $used_layout['inherit'] ) && $used_layout['inherit'] ) {
if ( ! $global_layout_settings ) {
return $block_content;
}
}
$class_names = array();
$layout_definitions = _wp_array_get( $global_layout_settings, array( 'definitions' ), array() );
$block_classname = wp_get_block_default_classname( $block['blockName'] );
$container_class = wp_unique_id( 'wp-container-' );
$layout_classname = '';
// 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';
}
if (
wp_get_global_settings( array( 'useRootPaddingAwareAlignments' ) ) &&
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 = _wp_array_get( $layout_definitions, array( $used_layout['type'], 'className' ), '' );
} else {
$layout_classname = _wp_array_get( $layout_definitions, array( '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_array_get( $block, array( 'attrs', 'style', 'spacing', 'blockGap' ) );
/*
* 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 = _wp_array_get( $block_type->supports, array( 'spacing', 'blockGap', '__experimentalDefault' ), '0.5em' );
$block_spacing = _wp_array_get( $block, array( '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' );
$style = wp_get_layout_style(
".$block_classname.$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;
}
}
/*
* This assumes the hook only applies to blocks with a single wrapper.
* A limitation of this hook is that nested inner blocks wrappers are not yet supported.
*/
$content = preg_replace(
'/' . preg_quote( 'class="', '/' ) . '/',
'class="' . esc_attr( implode( ' ', $class_names ) ) . ' ',
$block_content,
1
);
return $content;
}
// 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_JSON_Resolver::theme_has_support() ||
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_JSON_Resolver::theme_has_support() ||
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 );