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class-wp-theme-json-6-1.php
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class-wp-theme-json-6-1.php
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<?php
/**
* WP_Theme_JSON_6_1 class
*
* @package gutenberg
*/
/**
* Class that encapsulates the processing of structures that adhere to the theme.json spec.
*
* This class is for internal core usage and is not supposed to be used by extenders (plugins and/or themes).
* This is a low-level API that may need to do breaking changes. Please,
* use get_global_settings, get_global_styles, and get_global_stylesheet instead.
*
* @access private
*/
class WP_Theme_JSON_6_1 extends WP_Theme_JSON_6_0 {
/**
* Define which defines which pseudo selectors are enabled for
* which elements.
* Note: this will effect both top level and block level elements.
*/
const VALID_ELEMENT_PSEUDO_SELECTORS = array(
'link' => array( ':hover', ':focus', ':active', ':visited' ),
'button' => array( ':hover', ':focus', ':active', ':visited' ),
);
/**
* Metadata for style properties.
*
* Each element is a direct mapping from the CSS property name to the
* path to the value in theme.json & block attributes.
*/
const PROPERTIES_METADATA = array(
'background' => array( 'color', 'gradient' ),
'background-color' => array( 'color', 'background' ),
'border-radius' => array( 'border', 'radius' ),
'border-top-left-radius' => array( 'border', 'radius', 'topLeft' ),
'border-top-right-radius' => array( 'border', 'radius', 'topRight' ),
'border-bottom-left-radius' => array( 'border', 'radius', 'bottomLeft' ),
'border-bottom-right-radius' => array( 'border', 'radius', 'bottomRight' ),
'border-color' => array( 'border', 'color' ),
'border-width' => array( 'border', 'width' ),
'border-style' => array( 'border', 'style' ),
'border-top-color' => array( 'border', 'top', 'color' ),
'border-top-width' => array( 'border', 'top', 'width' ),
'border-top-style' => array( 'border', 'top', 'style' ),
'border-right-color' => array( 'border', 'right', 'color' ),
'border-right-width' => array( 'border', 'right', 'width' ),
'border-right-style' => array( 'border', 'right', 'style' ),
'border-bottom-color' => array( 'border', 'bottom', 'color' ),
'border-bottom-width' => array( 'border', 'bottom', 'width' ),
'border-bottom-style' => array( 'border', 'bottom', 'style' ),
'border-left-color' => array( 'border', 'left', 'color' ),
'border-left-width' => array( 'border', 'left', 'width' ),
'border-left-style' => array( 'border', 'left', 'style' ),
'color' => array( 'color', 'text' ),
'font-family' => array( 'typography', 'fontFamily' ),
'font-size' => array( 'typography', 'fontSize' ),
'font-style' => array( 'typography', 'fontStyle' ),
'font-weight' => array( 'typography', 'fontWeight' ),
'letter-spacing' => array( 'typography', 'letterSpacing' ),
'line-height' => array( 'typography', 'lineHeight' ),
'margin' => array( 'spacing', 'margin' ),
'margin-top' => array( 'spacing', 'margin', 'top' ),
'margin-right' => array( 'spacing', 'margin', 'right' ),
'margin-bottom' => array( 'spacing', 'margin', 'bottom' ),
'margin-left' => array( 'spacing', 'margin', 'left' ),
'padding' => array( 'spacing', 'padding' ),
'padding-top' => array( 'spacing', 'padding', 'top' ),
'padding-right' => array( 'spacing', 'padding', 'right' ),
'padding-bottom' => array( 'spacing', 'padding', 'bottom' ),
'padding-left' => array( 'spacing', 'padding', 'left' ),
'--wp--style--root--padding' => array( 'spacing', 'padding' ),
'--wp--style--root--padding-top' => array( 'spacing', 'padding', 'top' ),
'--wp--style--root--padding-right' => array( 'spacing', 'padding', 'right' ),
'--wp--style--root--padding-bottom' => array( 'spacing', 'padding', 'bottom' ),
'--wp--style--root--padding-left' => array( 'spacing', 'padding', 'left' ),
'text-decoration' => array( 'typography', 'textDecoration' ),
'text-transform' => array( 'typography', 'textTransform' ),
'filter' => array( 'filter', 'duotone' ),
);
/**
* The valid elements that can be found under styles.
*
* @var string[]
*/
const ELEMENTS = array(
'link' => 'a:where(:not(.wp-element-button))', // The where is needed to lower the specificity.
'heading' => 'h1, h2, h3, h4, h5, h6',
'h1' => 'h1',
'h2' => 'h2',
'h3' => 'h3',
'h4' => 'h4',
'h5' => 'h5',
'h6' => 'h6',
'button' => '.wp-element-button, .wp-block-button__link', // We have the .wp-block-button__link class so that this will target older buttons that have been serialized.
'caption' => '.wp-element-caption, .wp-block-audio figcaption, .wp-block-embed figcaption, .wp-block-gallery figcaption, .wp-block-image figcaption, .wp-block-table figcaption, .wp-block-video figcaption', // The block classes are necessary to target older content that won't use the new class names.
);
const __EXPERIMENTAL_ELEMENT_CLASS_NAMES = array(
'button' => 'wp-element-button',
'caption' => 'wp-element-caption',
);
// List of block support features that can have their related styles
// generated under their own feature level selector rather than the block's.
const BLOCK_SUPPORT_FEATURE_LEVEL_SELECTORS = array(
'__experimentalBorder' => 'border',
'color' => 'color',
'spacing' => 'spacing',
'typography' => 'typography',
);
/**
* Given an element name, returns a class name.
*
* @param string $element The name of the element.
*
* @return string The name of the class.
*
* @since 6.1.0
*/
public static function get_element_class_name( $element ) {
return array_key_exists( $element, static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES ) ? static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES[ $element ] : '';
}
/**
* Sanitizes the input according to the schemas.
*
* @since 5.8.0
* @since 5.9.0 Added the `$valid_block_names` and `$valid_element_name` parameters.
*
* @param array $input Structure to sanitize.
* @param array $valid_block_names List of valid block names.
* @param array $valid_element_names List of valid element names.
* @return array The sanitized output.
*/
protected static function sanitize( $input, $valid_block_names, $valid_element_names ) {
$output = array();
if ( ! is_array( $input ) ) {
return $output;
}
// Preserve only the top most level keys.
$output = array_intersect_key( $input, array_flip( static::VALID_TOP_LEVEL_KEYS ) );
// Remove any rules that are annotated as "top" in VALID_STYLES constant.
// Some styles are only meant to be available at the top-level (e.g.: blockGap),
// hence, the schema for blocks & elements should not have them.
$styles_non_top_level = static::VALID_STYLES;
foreach ( array_keys( $styles_non_top_level ) as $section ) {
foreach ( array_keys( $styles_non_top_level[ $section ] ) as $prop ) {
if ( 'top' === $styles_non_top_level[ $section ][ $prop ] ) {
unset( $styles_non_top_level[ $section ][ $prop ] );
}
}
}
// Build the schema based on valid block & element names.
$schema = array();
$schema_styles_elements = array();
// Set allowed element pseudo selectors based on per element allow list.
// Target data structure in schema:
// e.g.
// - top level elements: `$schema['styles']['elements']['link'][':hover']`.
// - block level elements: `$schema['styles']['blocks']['core/button']['elements']['link'][':hover']`.
foreach ( $valid_element_names as $element ) {
$schema_styles_elements[ $element ] = $styles_non_top_level;
if ( array_key_exists( $element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {
$schema_styles_elements[ $element ][ $pseudo_selector ] = $styles_non_top_level;
}
}
}
$schema_styles_blocks = array();
$schema_settings_blocks = array();
foreach ( $valid_block_names as $block ) {
$schema_settings_blocks[ $block ] = static::VALID_SETTINGS;
$schema_styles_blocks[ $block ] = $styles_non_top_level;
$schema_styles_blocks[ $block ]['elements'] = $schema_styles_elements;
}
$schema['styles'] = static::VALID_STYLES;
$schema['styles']['blocks'] = $schema_styles_blocks;
$schema['styles']['elements'] = $schema_styles_elements;
$schema['settings'] = static::VALID_SETTINGS;
$schema['settings']['blocks'] = $schema_settings_blocks;
// Remove anything that's not present in the schema.
foreach ( array( 'styles', 'settings' ) as $subtree ) {
if ( ! isset( $input[ $subtree ] ) ) {
continue;
}
if ( ! is_array( $input[ $subtree ] ) ) {
unset( $output[ $subtree ] );
continue;
}
$result = static::remove_keys_not_in_schema( $input[ $subtree ], $schema[ $subtree ] );
if ( empty( $result ) ) {
unset( $output[ $subtree ] );
} else {
$output[ $subtree ] = $result;
}
}
return $output;
}
/**
* Removes insecure data from theme.json.
*
* @since 5.9.0
*
* @param array $theme_json Structure to sanitize.
* @return array Sanitized structure.
*/
public static function remove_insecure_properties( $theme_json ) {
$sanitized = array();
$theme_json = WP_Theme_JSON_Schema::migrate( $theme_json );
$valid_block_names = array_keys( static::get_blocks_metadata() );
$valid_element_names = array_keys( static::ELEMENTS );
$theme_json = static::sanitize( $theme_json, $valid_block_names, $valid_element_names );
$blocks_metadata = static::get_blocks_metadata();
$style_nodes = static::get_style_nodes( $theme_json, $blocks_metadata );
foreach ( $style_nodes as $metadata ) {
$input = _wp_array_get( $theme_json, $metadata['path'], array() );
if ( empty( $input ) ) {
continue;
}
$output = static::remove_insecure_styles( $input );
// Get a reference to element name from path.
// $metadata['path'] = array('styles','elements','link');.
$current_element = $metadata['path'][ count( $metadata['path'] ) - 1 ];
// $output is stripped of pseudo selectors. Readd and process them
// for insecure styles here.
if ( array_key_exists( $current_element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] as $pseudo_selector ) {
if ( isset( $input[ $pseudo_selector ] ) ) {
$output[ $pseudo_selector ] = static::remove_insecure_styles( $input[ $pseudo_selector ] );
}
}
}
if ( ! empty( $output ) ) {
_wp_array_set( $sanitized, $metadata['path'], $output );
}
}
$setting_nodes = static::get_setting_nodes( $theme_json );
foreach ( $setting_nodes as $metadata ) {
$input = _wp_array_get( $theme_json, $metadata['path'], array() );
if ( empty( $input ) ) {
continue;
}
$output = static::remove_insecure_settings( $input );
if ( ! empty( $output ) ) {
_wp_array_set( $sanitized, $metadata['path'], $output );
}
}
if ( empty( $sanitized['styles'] ) ) {
unset( $theme_json['styles'] );
} else {
$theme_json['styles'] = $sanitized['styles'];
}
if ( empty( $sanitized['settings'] ) ) {
unset( $theme_json['settings'] );
} else {
$theme_json['settings'] = $sanitized['settings'];
}
return $theme_json;
}
/**
* The valid properties under the styles key.
*
* @var array
*/
const VALID_STYLES = array(
'border' => array(
'color' => null,
'radius' => null,
'style' => null,
'width' => null,
'top' => null,
'right' => null,
'bottom' => null,
'left' => null,
),
'color' => array(
'background' => null,
'gradient' => null,
'text' => null,
),
'filter' => array(
'duotone' => null,
),
'spacing' => array(
'margin' => null,
'padding' => null,
'blockGap' => null,
),
'typography' => array(
'fontFamily' => null,
'fontSize' => null,
'fontStyle' => null,
'fontWeight' => null,
'letterSpacing' => null,
'lineHeight' => null,
'textDecoration' => null,
'textTransform' => null,
),
);
/**
* Function that appends a sub-selector to a existing one.
*
* Given the compounded $selector "h1, h2, h3"
* and the $to_append selector ".some-class" the result will be
* "h1.some-class, h2.some-class, h3.some-class".
*
* @since 5.8.0
* @since 6.1.0 Added append position.
*
* @param string $selector Original selector.
* @param string $to_append Selector to append.
* @param string $position A position sub-selector should be appended. Default: 'right'.
* @return string
*/
protected static function append_to_selector( $selector, $to_append, $position = 'right' ) {
$new_selectors = array();
$selectors = explode( ',', $selector );
foreach ( $selectors as $sel ) {
$new_selectors[] = 'right' === $position ? $sel . $to_append : $to_append . $sel;
}
return implode( ',', $new_selectors );
}
/**
* Returns the metadata for each block.
*
* Example:
*
* {
* 'core/paragraph': {
* 'selector': 'p',
* 'elements': {
* 'link' => 'link selector',
* 'etc' => 'element selector'
* }
* },
* 'core/heading': {
* 'selector': 'h1',
* 'elements': {}
* },
* 'core/image': {
* 'selector': '.wp-block-image',
* 'duotone': 'img',
* 'elements': {}
* }
* }
*
* @return array Block metadata.
*/
protected static function get_blocks_metadata() {
if ( null !== static::$blocks_metadata ) {
return static::$blocks_metadata;
}
static::$blocks_metadata = array();
$registry = WP_Block_Type_Registry::get_instance();
$blocks = $registry->get_all_registered();
foreach ( $blocks as $block_name => $block_type ) {
if (
isset( $block_type->supports['__experimentalSelector'] ) &&
is_string( $block_type->supports['__experimentalSelector'] )
) {
static::$blocks_metadata[ $block_name ]['selector'] = $block_type->supports['__experimentalSelector'];
} else {
static::$blocks_metadata[ $block_name ]['selector'] = '.wp-block-' . str_replace( '/', '-', str_replace( 'core/', '', $block_name ) );
}
if (
isset( $block_type->supports['color']['__experimentalDuotone'] ) &&
is_string( $block_type->supports['color']['__experimentalDuotone'] )
) {
static::$blocks_metadata[ $block_name ]['duotone'] = $block_type->supports['color']['__experimentalDuotone'];
}
// Generate block support feature level selectors if opted into
// for the current block.
$features = array();
foreach ( static::BLOCK_SUPPORT_FEATURE_LEVEL_SELECTORS as $key => $feature ) {
if (
isset( $block_type->supports[ $key ]['__experimentalSelector'] ) &&
$block_type->supports[ $key ]['__experimentalSelector']
) {
$features[ $feature ] = static::scope_selector(
static::$blocks_metadata[ $block_name ]['selector'],
$block_type->supports[ $key ]['__experimentalSelector']
);
}
}
if ( ! empty( $features ) ) {
static::$blocks_metadata[ $block_name ]['features'] = $features;
}
// Assign defaults, then overwrite those that the block sets by itself.
// If the block selector is compounded, will append the element to each
// individual block selector.
$block_selectors = explode( ',', static::$blocks_metadata[ $block_name ]['selector'] );
foreach ( static::ELEMENTS as $el_name => $el_selector ) {
$element_selector = array();
foreach ( $block_selectors as $selector ) {
if ( $selector === $el_selector ) {
$element_selector = array( $el_selector );
break;
}
$element_selector = static::append_to_selector( $el_selector, $selector . ' ', 'left' );
}
static::$blocks_metadata[ $block_name ]['elements'][ $el_name ] = $element_selector;
}
}
return static::$blocks_metadata;
}
/**
* Builds metadata for the style nodes, which returns in the form of:
*
* [
* [
* 'path' => [ 'path', 'to', 'some', 'node' ],
* 'selector' => 'CSS selector for some node',
* 'duotone' => 'CSS selector for duotone for some node'
* ],
* [
* 'path' => ['path', 'to', 'other', 'node' ],
* 'selector' => 'CSS selector for other node',
* 'duotone' => null
* ],
* ]
*
* @since 5.8.0
*
* @param array $theme_json The tree to extract style nodes from.
* @param array $selectors List of selectors per block.
* @return array
*/
protected static function get_style_nodes( $theme_json, $selectors = array() ) {
$nodes = array();
if ( ! isset( $theme_json['styles'] ) ) {
return $nodes;
}
// Top-level.
$nodes[] = array(
'path' => array( 'styles' ),
'selector' => static::ROOT_BLOCK_SELECTOR,
);
if ( isset( $theme_json['styles']['elements'] ) ) {
foreach ( self::ELEMENTS as $element => $selector ) {
if ( ! isset( $theme_json['styles']['elements'][ $element ] ) ) {
continue;
}
// Handle element defaults.
$nodes[] = array(
'path' => array( 'styles', 'elements', $element ),
'selector' => static::ELEMENTS[ $element ],
);
// Handle any pseudo selectors for the element.
if ( array_key_exists( $element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {
if ( isset( $theme_json['styles']['elements'][ $element ][ $pseudo_selector ] ) ) {
$nodes[] = array(
'path' => array( 'styles', 'elements', $element ),
'selector' => static::append_to_selector( static::ELEMENTS[ $element ], $pseudo_selector ),
);
}
}
}
}
}
// Blocks.
if ( ! isset( $theme_json['styles']['blocks'] ) ) {
return $nodes;
}
$nodes = array_merge( $nodes, static::get_block_nodes( $theme_json, $selectors ) );
// This filter allows us to modify the output of WP_Theme_JSON so that we can do things like loading block CSS independently.
return apply_filters( 'gutenberg_get_style_nodes', $nodes );
}
/**
* A public helper to get the block nodes from a theme.json file.
*
* @return array The block nodes in theme.json.
*/
public function get_styles_block_nodes() {
return static::get_block_nodes( $this->theme_json );
}
/**
* An internal method to get the block nodes from a theme.json file.
*
* @param array $theme_json The theme.json converted to an array.
* @param array $selectors Optional list of selectors per block.
*
* @return array The block nodes in theme.json.
*/
private static function get_block_nodes( $theme_json, $selectors = array() ) {
$selectors = empty( $selectors ) ? static::get_blocks_metadata() : $selectors;
$nodes = array();
if ( ! isset( $theme_json['styles'] ) ) {
return $nodes;
}
// Blocks.
if ( ! isset( $theme_json['styles']['blocks'] ) ) {
return $nodes;
}
foreach ( $theme_json['styles']['blocks'] as $name => $node ) {
$selector = null;
if ( isset( $selectors[ $name ]['selector'] ) ) {
$selector = $selectors[ $name ]['selector'];
}
$duotone_selector = null;
if ( isset( $selectors[ $name ]['duotone'] ) ) {
$duotone_selector = $selectors[ $name ]['duotone'];
}
$feature_selectors = null;
if ( isset( $selectors[ $name ]['features'] ) ) {
$feature_selectors = $selectors[ $name ]['features'];
}
$nodes[] = array(
'name' => $name,
'path' => array( 'styles', 'blocks', $name ),
'selector' => $selector,
'duotone' => $duotone_selector,
'features' => $feature_selectors,
);
if ( isset( $theme_json['styles']['blocks'][ $name ]['elements'] ) ) {
foreach ( $theme_json['styles']['blocks'][ $name ]['elements'] as $element => $node ) {
$nodes[] = array(
'path' => array( 'styles', 'blocks', $name, 'elements', $element ),
'selector' => $selectors[ $name ]['elements'][ $element ],
);
// Handle any pseudo selectors for the element.
if ( array_key_exists( $element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {
if ( isset( $theme_json['styles']['blocks'][ $name ]['elements'][ $element ][ $pseudo_selector ] ) ) {
$nodes[] = array(
'path' => array( 'styles', 'blocks', $name, 'elements', $element ),
'selector' => static::append_to_selector( $selectors[ $name ]['elements'][ $element ], $pseudo_selector ),
);
}
}
}
}
}
}
return $nodes;
}
/**
* Returns the stylesheet that results of processing
* the theme.json structure this object represents.
*
* @param array $types Types of styles to load. Will load all by default. It accepts:
* 'variables': only the CSS Custom Properties for presets & custom ones.
* 'styles': only the styles section in theme.json.
* 'presets': only the classes for the presets.
* @param array $origins A list of origins to include. By default it includes VALID_ORIGINS.
* @return string Stylesheet.
*/
public function get_stylesheet( $types = array( 'variables', 'styles', 'presets' ), $origins = null ) {
if ( null === $origins ) {
$origins = static::VALID_ORIGINS;
}
if ( is_string( $types ) ) {
// Dispatch error and map old arguments to new ones.
_deprecated_argument( __FUNCTION__, '5.9' );
if ( 'block_styles' === $types ) {
$types = array( 'styles', 'presets' );
} elseif ( 'css_variables' === $types ) {
$types = array( 'variables' );
} else {
$types = array( 'variables', 'styles', 'presets' );
}
}
$blocks_metadata = static::get_blocks_metadata();
$style_nodes = static::get_style_nodes( $this->theme_json, $blocks_metadata );
$setting_nodes = static::get_setting_nodes( $this->theme_json, $blocks_metadata );
$stylesheet = '';
if ( in_array( 'variables', $types, true ) ) {
$stylesheet .= $this->get_css_variables( $setting_nodes, $origins );
}
if ( in_array( 'styles', $types, true ) ) {
$stylesheet .= $this->get_block_classes( $style_nodes );
} elseif ( in_array( 'base-layout-styles', $types, true ) ) {
// Base layout styles are provided as part of `styles`, so only output separately if explicitly requested.
// For backwards compatibility, the Columns block is explicitly included, to support a different default gap value.
$base_styles_nodes = array(
array(
'path' => array( 'styles' ),
'selector' => static::ROOT_BLOCK_SELECTOR,
),
array(
'path' => array( 'styles', 'blocks', 'core/columns' ),
'selector' => '.wp-block-columns',
'name' => 'core/columns',
),
);
foreach ( $base_styles_nodes as $base_style_node ) {
$stylesheet .= $this->get_layout_styles( $base_style_node );
}
}
if ( in_array( 'presets', $types, true ) ) {
$stylesheet .= $this->get_preset_classes( $setting_nodes, $origins );
}
return $stylesheet;
}
/**
* Gets the CSS rules for a particular block from theme.json.
*
* @param array $block_metadata Metadata about the block to get styles for.
*
* @return string Styles for the block.
*/
public function get_styles_for_block( $block_metadata ) {
$node = _wp_array_get( $this->theme_json, $block_metadata['path'], array() );
$use_root_padding = isset( $this->theme_json['settings']['useRootPaddingAwareAlignments'] ) && true === $this->theme_json['settings']['useRootPaddingAwareAlignments'];
$selector = $block_metadata['selector'];
$settings = _wp_array_get( $this->theme_json, array( 'settings' ) );
// Process style declarations for block support features the current
// block contains selectors for. Values for a feature with a custom
// selector are filtered from the theme.json node before it is
// processed as normal.
$feature_declarations = array();
if ( ! empty( $block_metadata['features'] ) ) {
foreach ( $block_metadata['features'] as $feature_name => $feature_selector ) {
if ( ! empty( $node[ $feature_name ] ) ) {
// Create temporary node containing only the feature data
// to leverage existing `compute_style_properties` function.
$feature = array( $feature_name => $node[ $feature_name ] );
// Generate the feature's declarations only.
$new_feature_declarations = static::compute_style_properties( $feature, $settings, null, $this->theme_json );
// Merge new declarations with any that already exist for
// the feature selector. This may occur when multiple block
// support features use the same custom selector.
if ( isset( $feature_declarations[ $feature_selector ] ) ) {
$feature_declarations[ $feature_selector ] = array_merge( $feature_declarations[ $feature_selector ], $new_feature_declarations );
} else {
$feature_declarations[ $feature_selector ] = $new_feature_declarations;
}
// Remove the feature from the block's node now the
// styles will be included under the feature level selector.
unset( $node[ $feature_name ] );
}
}
}
// Get a reference to element name from path.
// $block_metadata['path'] = array('styles','elements','link');
// Make sure that $block_metadata['path'] describes an element node, like ['styles', 'element', 'link'].
// Skip non-element paths like just ['styles'].
$is_processing_element = in_array( 'elements', $block_metadata['path'], true );
$current_element = $is_processing_element ? $block_metadata['path'][ count( $block_metadata['path'] ) - 1 ] : null;
$element_pseudo_allowed = array_key_exists( $current_element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) ? static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] : array();
// Check for allowed pseudo classes (e.g. ":hover") from the $selector ("a:hover").
// This also resets the array keys.
$pseudo_matches = array_values(
array_filter(
$element_pseudo_allowed,
function( $pseudo_selector ) use ( $selector ) {
return str_contains( $selector, $pseudo_selector );
}
)
);
$pseudo_selector = isset( $pseudo_matches[0] ) ? $pseudo_matches[0] : null;
// If the current selector is a pseudo selector that's defined in the allow list for the current
// element then compute the style properties for it.
// Otherwise just compute the styles for the default selector as normal.
if ( $pseudo_selector && isset( $node[ $pseudo_selector ] ) && array_key_exists( $current_element, static::VALID_ELEMENT_PSEUDO_SELECTORS ) && in_array( $pseudo_selector, static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ], true ) ) {
$declarations = static::compute_style_properties( $node[ $pseudo_selector ], $settings, null, $this->theme_json, $selector, $use_root_padding );
} else {
$declarations = static::compute_style_properties( $node, $settings, null, $this->theme_json, $selector, $use_root_padding );
}
$block_rules = '';
// 1. Separate the ones who use the general selector
// and the ones who use the duotone selector.
$declarations_duotone = array();
foreach ( $declarations as $index => $declaration ) {
if ( 'filter' === $declaration['name'] ) {
unset( $declarations[ $index ] );
$declarations_duotone[] = $declaration;
}
}
/*
* Reset default browser margin on the root body element.
* This is set on the root selector **before** generating the ruleset
* from the `theme.json`. This is to ensure that if the `theme.json` declares
* `margin` in its `spacing` declaration for the `body` element then these
* user-generated values take precedence in the CSS cascade.
* @link https://github.com/WordPress/gutenberg/issues/36147.
*/
if ( static::ROOT_BLOCK_SELECTOR === $selector ) {
$block_rules .= 'body { margin: 0; }';
}
// 2. Generate and append the rules that use the general selector.
$block_rules .= static::to_ruleset( $selector, $declarations );
// 3. Generate and append the rules that use the duotone selector.
if ( isset( $block_metadata['duotone'] ) && ! empty( $declarations_duotone ) ) {
$selector_duotone = static::scope_selector( $block_metadata['selector'], $block_metadata['duotone'] );
$block_rules .= static::to_ruleset( $selector_duotone, $declarations_duotone );
}
// 4. Generate Layout block gap styles.
if (
static::ROOT_BLOCK_SELECTOR !== $selector &&
! empty( $block_metadata['name'] )
) {
$block_rules .= $this->get_layout_styles( $block_metadata );
}
// 5. Generate and append the feature level rulesets.
foreach ( $feature_declarations as $feature_selector => $individual_feature_declarations ) {
$block_rules .= static::to_ruleset( $feature_selector, $individual_feature_declarations );
}
if ( static::ROOT_BLOCK_SELECTOR === $selector ) {
if ( $use_root_padding ) {
$block_rules .= '.wp-site-blocks { padding-top: var(--wp--style--root--padding-top); padding-bottom: var(--wp--style--root--padding-bottom); }';
$block_rules .= '.has-global-padding { padding-right: var(--wp--style--root--padding-right); padding-left: var(--wp--style--root--padding-left); }';
$block_rules .= '.has-global-padding > .alignfull { margin-right: calc(var(--wp--style--root--padding-right) * -1); margin-left: calc(var(--wp--style--root--padding-left) * -1); }';
$block_rules .= '.has-global-padding > .alignfull > :where([class*="wp-block-"]:not(.alignfull):not(.alignfull):not([class*="__"]),p,h1,h2,h3,h4,h5,h6,ul,ol) { padding-right: var(--wp--style--root--padding-right); padding-left: var(--wp--style--root--padding-left); }';
}
$block_rules .= '.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }';
$block_rules .= '.wp-site-blocks > .alignright { float: right; margin-left: 2em; }';
$block_rules .= '.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';
$has_block_gap_support = _wp_array_get( $this->theme_json, array( 'settings', 'spacing', 'blockGap' ) ) !== null;
if ( $has_block_gap_support ) {
$block_gap_value = static::get_property_value( $this->theme_json, array( 'styles', 'spacing', 'blockGap' ) );
$block_rules .= '.wp-site-blocks > * { margin-block-start: 0; margin-block-end: 0; }';
$block_rules .= ".wp-site-blocks > * + * { margin-block-start: $block_gap_value; }";
// For backwards compatibility, ensure the legacy block gap CSS variable is still available.
$block_rules .= "$selector { --wp--style--block-gap: $block_gap_value; }";
}
$block_rules .= $this->get_layout_styles( $block_metadata );
}
return $block_rules;
}
/**
* Converts each style section into a list of rulesets
* containing the block styles to be appended to the stylesheet.
*
* See glossary at https://developer.mozilla.org/en-US/docs/Web/CSS/Syntax
*
* For each section this creates a new ruleset such as:
*
* block-selector {
* style-property-one: value;
* }
*
* @param array $style_nodes Nodes with styles.
* @return string The new stylesheet.
*/
protected function get_block_classes( $style_nodes ) {
$block_rules = '';
foreach ( $style_nodes as $metadata ) {
if ( null === $metadata['selector'] ) {
continue;
}
$block_rules .= static::get_styles_for_block( $metadata );
}
return $block_rules;
}
/**
* Given a styles array, it extracts the style properties
* and adds them to the $declarations array following the format:
*
* ```php
* array(
* 'name' => 'property_name',
* 'value' => 'property_value,
* )
* ```
*
* @param array $styles Styles to process.
* @param array $settings Theme settings.
* @param array $properties Properties metadata.
* @param array $theme_json Theme JSON array.
* @param string $selector The style block selector.
* @param boolean $use_root_padding Whether to add custom properties at root level.
* @return array Returns the modified $declarations.
*/
protected static function compute_style_properties( $styles, $settings = array(), $properties = null, $theme_json = null, $selector = null, $use_root_padding = null ) {
if ( null === $properties ) {
$properties = static::PROPERTIES_METADATA;
}
$declarations = array();
if ( empty( $styles ) ) {
return $declarations;
}
$root_variable_duplicates = array();
foreach ( $properties as $css_property => $value_path ) {
$value = static::get_property_value( $styles, $value_path, $theme_json );
if ( strpos( $css_property, '--wp--style--root--' ) === 0 && ( static::ROOT_BLOCK_SELECTOR !== $selector || ! $use_root_padding ) ) {
continue;
}
// Root-level padding styles don't currently support strings with CSS shorthand values.
// This may change: https://github.com/WordPress/gutenberg/issues/40132.
if ( '--wp--style--root--padding' === $css_property && is_string( $value ) ) {
continue;
}
if ( strpos( $css_property, '--wp--style--root--' ) === 0 && $use_root_padding ) {
$root_variable_duplicates[] = substr( $css_property, strlen( '--wp--style--root--' ) );
}
// Look up protected properties, keyed by value path.
// Skip protected properties that are explicitly set to `null`.
if ( is_array( $value_path ) ) {
$path_string = implode( '.', $value_path );
if (
array_key_exists( $path_string, static::PROTECTED_PROPERTIES ) &&
_wp_array_get( $settings, static::PROTECTED_PROPERTIES[ $path_string ], null ) === null
) {
continue;
}
}
// Skip if empty and not "0" or value represents array of longhand values.
$has_missing_value = empty( $value ) && ! is_numeric( $value );
if ( $has_missing_value || is_array( $value ) ) {
continue;
}
$declarations[] = array(
'name' => $css_property,
'value' => $value,
);
}
// If a variable value is added to the root, the corresponding property should be removed.
foreach ( $root_variable_duplicates as $duplicate ) {
$discard = array_search( $duplicate, array_column( $declarations, 'name' ), true );
if ( is_numeric( $discard ) ) {
array_splice( $declarations, $discard, 1 );
}
}
return $declarations;
}
/**
* Returns the style property for the given path.
*
* It also converts CSS Custom Property stored as
* "var:preset|color|secondary" to the form
* "--wp--preset--color--secondary".
*
* It also converts references to a path to the value
* stored at that location, e.g.
* { "ref": "style.color.background" } => "#fff".
*
* @param array $styles Styles subtree.
* @param array $path Which property to process.
* @param array $theme_json Theme JSON array.
* @return string Style property value.
*/
protected static function get_property_value( $styles, $path, $theme_json = null ) {
$value = _wp_array_get( $styles, $path, '' );
// This converts references to a path to the value at that path
// where the values is an array with a "ref" key, pointing to a path.
// For example: { "ref": "style.color.background" } => "#fff".
if ( is_array( $value ) && array_key_exists( 'ref', $value ) ) {
$value_path = explode( '.', $value['ref'] );
$ref_value = _wp_array_get( $theme_json, $value_path );
// Only use the ref value if we find anything.
if ( ! empty( $ref_value ) && is_string( $ref_value ) ) {
$value = $ref_value;
}
if ( is_array( $ref_value ) && array_key_exists( 'ref', $ref_value ) ) {
$path_string = json_encode( $path );
$ref_value_string = json_encode( $ref_value );
_doing_it_wrong( 'get_property_value', "Your theme.json file uses a dynamic value (${ref_value_string}) for the path at ${path_string}. However, the value at ${path_string} is also a dynamic value (pointing to ${ref_value['ref']}) and pointing to another dynamic value is not supported. Please update ${path_string} to point directly to ${ref_value['ref']}.", '6.1.0' );
}
}
if ( '' === $value || is_array( $value ) ) {
return $value;
}
// Convert custom CSS properties.
$prefix = 'var:';
$prefix_len = strlen( $prefix );
$token_in = '|';
$token_out = '--';
if ( 0 === strncmp( $value, $prefix, $prefix_len ) ) {
$unwrapped_name = str_replace(
$token_in,
$token_out,
substr( $value, $prefix_len )
);
$value = "var(--wp--$unwrapped_name)";
}
return $value;
}
/**
* Presets are a set of values that serve
* to bootstrap some styles: colors, font sizes, etc.
*
* They are a unkeyed array of values such as:
*
* ```php
* array(
* array(
* 'slug' => 'unique-name-within-the-set',
* 'name' => 'Name for the UI',