path = array( 'styles', 'blocks', $name, 'elements', $element );
if ( $include_node_paths_only ) {
$nodes[] = array(
'path' => $node_path,
);
continue;
}
$nodes[] = array(
'path' => $node_path,
'selector' => $selectors[ $name ]['elements'][ $element ],
);
// Handle any pseudo selectors for the element.
if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {
if ( isset( $theme_json['styles']['blocks'][ $name ]['elements'][ $element ][ $pseudo_selector ] ) ) {
$node_path = array( 'styles', 'blocks', $name, 'elements', $element );
if ( $include_node_paths_only ) {
$nodes[] = array(
'path' => $node_path,
);
continue;
}
$nodes[] = array(
'path' => $node_path,
'selector' => static::append_to_selector( $selectors[ $name ]['elements'][ $element ], $pseudo_selector ),
);
}
}
}
}
}
}
return $nodes;
}
/**
* Gets the CSS rules for a particular block from theme.json.
*
* @since 6.1.0
* @since 6.6.0 Setting a min-height of HTML when root styles have a background gradient or image.
* Updated general global styles specificity to 0-1-0.
* Fixed custom CSS output in block style variations.
*
* @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 = isset( $this->theme_json['settings'] ) ? $this->theme_json['settings'] : array();
$feature_declarations = static::get_feature_declarations_for_node( $block_metadata, $node );
$is_root_selector = static::ROOT_BLOCK_SELECTOR === $selector;
// If there are style variations, generate the declarations for them, including any feature selectors the block may have.
$style_variation_declarations = array();
$style_variation_custom_css = array();
if ( ! empty( $block_metadata['variations'] ) ) {
foreach ( $block_metadata['variations'] as $style_variation ) {
$style_variation_node = _wp_array_get( $this->theme_json, $style_variation['path'], array() );
$clean_style_variation_selector = trim( $style_variation['selector'] );
// Generate any feature/subfeature style declarations for the current style variation.
$variation_declarations = static::get_feature_declarations_for_node( $block_metadata, $style_variation_node );
// Combine selectors with style variation's selector and add to overall style variation declarations.
foreach ( $variation_declarations as $current_selector => $new_declarations ) {
// If current selector includes block classname, remove it but leave the whitespace in.
$shortened_selector = str_replace( $block_metadata['selector'] . ' ', ' ', $current_selector );
// Prepend the variation selector to the current selector.
$split_selectors = explode( ',', $shortened_selector );
$updated_selectors = array_map(
static function ( $split_selector ) use ( $clean_style_variation_selector ) {
return $clean_style_variation_selector . $split_selector;
},
$split_selectors
);
$combined_selectors = implode( ',', $updated_selectors );
// Add the new declarations to the overall results under the modified selector.
$style_variation_declarations[ $combined_selectors ] = $new_declarations;
}
// Compute declarations for remaining styles not covered by feature level selectors.
$style_variation_declarations[ $style_variation['selector'] ] = static::compute_style_properties( $style_variation_node, $settings, null, $this->theme_json );
// Store custom CSS for the style variation.
if ( isset( $style_variation_node['css'] ) ) {
$style_variation_custom_css[ $style_variation['selector'] ] = $this->process_blocks_custom_css( $style_variation_node['css'], $style_variation['selector'] );
}
}
}
/*
* 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();
if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] ) ) {
$element_pseudo_allowed = static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ];
}
/*
* 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,
static 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 ] ) &&
isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] )
&& 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. Bespoke declaration modifiers:
* - 'filter': Separate the declarations that use the general selector
* from the ones using the duotone selector.
* - 'background|background-image': set the html min-height to 100%
* to ensure the background covers the entire viewport.
*/
$declarations_duotone = array();
$should_set_root_min_height = false;
foreach ( $declarations as $index => $declaration ) {
if ( 'filter' === $declaration['name'] ) {
/*
* 'unset' filters happen when a filter is unset
* in the site-editor UI. Because the 'unset' value
* in the user origin overrides the value in the
* theme origin, we can skip rendering anything
* here as no filter needs to be applied anymore.
* So only add declarations to with values other
* than 'unset'.
*/
if ( 'unset' !== $declaration['value'] ) {
$declarations_duotone[] = $declaration;
}
unset( $declarations[ $index ] );
}
if ( $is_root_selector && ( 'background-image' === $declaration['name'] || 'background' === $declaration['name'] ) ) {
$should_set_root_min_height = true;
}
}
/*
* If root styles has a background-image or a background (gradient) set,
* set the min-height to '100%'. Minus `--wp-admin--admin-bar--height` for logged-in view.
* Setting the CSS rule on the HTML tag ensures background gradients and images behave similarly,
* and matches the behavior of the site editor.
*/
if ( $should_set_root_min_height ) {
$block_rules .= static::to_ruleset(
'html',
array(
array(
'name' => 'min-height',
'value' => 'calc(100% - var(--wp-admin--admin-bar--height, 0px))',
),
)
);
}
// Update declarations if there are separators with only background color defined.
if ( '.wp-block-separator' === $selector ) {
$declarations = static::update_separator_declarations( $declarations );
}
/*
* Root selector (body) styles should not be wrapped in `:root where()` to keep
* specificity at (0,0,1) and maintain backwards compatibility.
*
* Top-level element styles using element-only specificity selectors should
* not get wrapped in `:root :where()` to maintain backwards compatibility.
*
* Pseudo classes, e.g. :hover, :focus etc., are a class-level selector so
* still need to be wrapped in `:root :where` to cap specificity for nested
* variations etc. Pseudo selectors won't match the ELEMENTS selector exactly.
*/
$element_only_selector = $is_root_selector || (
$current_element &&
isset( static::ELEMENTS[ $current_element ] ) &&
// buttons, captions etc. still need `:root :where()` as they are class based selectors.
! isset( static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES[ $current_element ] ) &&
static::ELEMENTS[ $current_element ] === $selector
);
// 2. Generate and append the rules that use the general selector.
$general_selector = $element_only_selector ? $selector : ":root :where($selector)";
$block_rules .= static::to_ruleset( $general_selector, $declarations );
// 3. Generate and append the rules that use the duotone selector.
if ( isset( $block_metadata['duotone'] ) && ! empty( $declarations_duotone ) ) {
$block_rules .= static::to_ruleset( $block_metadata['duotone'], $declarations_duotone );
}
// 4. Generate Layout block gap styles.
if (
! $is_root_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 ) {
$block_rules .= static::to_ruleset( ":root :where($feature_selector)", $individual_feature_declarations );
}
// 6. Generate and append the style variation rulesets.
foreach ( $style_variation_declarations as $style_variation_selector => $individual_style_variation_declarations ) {
$block_rules .= static::to_ruleset( ":root :where($style_variation_selector)", $individual_style_variation_declarations );
if ( isset( $style_variation_custom_css[ $style_variation_selector ] ) ) {
$block_rules .= $style_variation_custom_css[ $style_variation_selector ];
}
}
// 7. Generate and append any custom CSS rules.
if ( isset( $node['css'] ) && ! $is_root_selector ) {
$block_rules .= $this->process_blocks_custom_css( $node['css'], $selector );
}
return $block_rules;
}
/**
* Outputs the CSS for layout rules on the root.
*
* @since 6.1.0
* @since 6.6.0 Use `ROOT_CSS_PROPERTIES_SELECTOR` for CSS custom properties and improved consistency of root padding rules.
* Updated specificity of body margin reset and first/last child selectors.
*
* @param string $selector The root node selector.
* @param array $block_metadata The metadata for the root block.
* @return string The additional root rules CSS.
*/
public function get_root_layout_rules( $selector, $block_metadata ) {
$css = '';
$settings = isset( $this->theme_json['settings'] ) ? $this->theme_json['settings'] : array();
$use_root_padding = isset( $this->theme_json['settings']['useRootPaddingAwareAlignments'] ) && true === $this->theme_json['settings']['useRootPaddingAwareAlignments'];
/*
* If there are content and wide widths in theme.json, output them
* as custom properties on the body element so all blocks can use them.
*/
if ( isset( $settings['layout']['contentSize'] ) || isset( $settings['layout']['wideSize'] ) ) {
$content_size = isset( $settings['layout']['contentSize'] ) ? $settings['layout']['contentSize'] : $settings['layout']['wideSize'];
$content_size = static::is_safe_css_declaration( 'max-width', $content_size ) ? $content_size : 'initial';
$wide_size = isset( $settings['layout']['wideSize'] ) ? $settings['layout']['wideSize'] : $settings['layout']['contentSize'];
$wide_size = static::is_safe_css_declaration( 'max-width', $wide_size ) ? $wide_size : 'initial';
$css .= static::ROOT_CSS_PROPERTIES_SELECTOR . ' { --wp--style--global--content-size: ' . $content_size . ';';
$css .= '--wp--style--global--wide-size: ' . $wide_size . '; }';
}
/*
* Reset default browser margin on the body element.
* This is set on the body 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.
*/
$css .= ':where(body) { margin: 0; }';
if ( $use_root_padding ) {
// Top and bottom padding are applied to the outer block container.
$css .= '.wp-site-blocks { padding-top: var(--wp--style--root--padding-top); padding-bottom: var(--wp--style--root--padding-bottom); }';
// Right and left padding are applied to the first container with `.has-global-padding` class.
$css .= '.has-global-padding { padding-right: var(--wp--style--root--padding-right); padding-left: var(--wp--style--root--padding-left); }';
// Alignfull children of the container with left and right padding have negative margins so they can still be full width.
$css .= '.has-global-padding > .alignfull { margin-right: calc(var(--wp--style--root--padding-right) * -1); margin-left: calc(var(--wp--style--root--padding-left) * -1); }';
// Nested children of the container with left and right padding that are not full aligned do not get padding, unless they are direct children of an alignfull flow container.
$css .= '.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) { padding-right: 0; padding-left: 0; }';
// Alignfull direct children of the containers that are targeted by the rule above do not need negative margins.
$css .= '.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) > .alignfull { margin-left: 0; margin-right: 0; }';
}
$css .= '.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }';
$css .= '.wp-site-blocks > .alignright { float: right; margin-left: 2em; }';
$css .= '.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';
// Block gap styles will be output unless explicitly set to `null`. See static::PROTECTED_PROPERTIES.
if ( isset( $this->theme_json['settings']['spacing']['blockGap'] ) ) {
$block_gap_value = static::get_property_value( $this->theme_json, array( 'styles', 'spacing', 'blockGap' ) );
$css .= ":where(.wp-site-blocks) > * { margin-block-start: $block_gap_value; margin-block-end: 0; }";
$css .= ':where(.wp-site-blocks) > :first-child { margin-block-start: 0; }';
$css .= ':where(.wp-site-blocks) > :last-child { margin-block-end: 0; }';
// For backwards compatibility, ensure the legacy block gap CSS variable is still available.
$css .= static::ROOT_CSS_PROPERTIES_SELECTOR . " { --wp--style--block-gap: $block_gap_value; }";
}
$css .= $this->get_layout_styles( $block_metadata );
return $css;
}
/**
* For metadata values that can either be booleans or paths to booleans, gets the value.
*
* $data = array(
* 'color' => array(
* 'defaultPalette' => true
* )
* );
*
* static::get_metadata_boolean( $data, false );
* // => false
*
* static::get_metadata_boolean( $data, array( 'color', 'defaultPalette' ) );
* // => true
*
* @since 6.0.0
*
* @param array $data The data to inspect.
* @param bool|array $path Boolean or path to a boolean.
* @param bool $default_value Default value if the referenced path is missing.
* Default false.
* @return bool Value of boolean metadata.
*/
protected static function get_metadata_boolean( $data, $path, $default_value = false ) {
if ( is_bool( $path ) ) {
return $path;
}
if ( is_array( $path ) ) {
$value = _wp_array_get( $data, $path );
if ( null !== $value ) {
return $value;
}
}
return $default_value;
}
/**
* Merges new incoming data.
*
* @since 5.8.0
* @since 5.9.0 Duotone preset also has origins.
* @since 6.7.0 Replace background image objects during merge.
*
* @param WP_Theme_JSON $incoming Data to merge.
*/
public function merge( $incoming ) {
$incoming_data = $incoming->get_raw_data();
$this->theme_json = array_replace_recursive( $this->theme_json, $incoming_data );
/*
* Recompute all the spacing sizes based on the new hierarchy of data. In the constructor
* spacingScale and spacingSizes are both keyed by origin and VALID_ORIGINS is ordered, so
* we can allow partial spacingScale data to inherit missing data from earlier layers when
* computing the spacing sizes.
*
* This happens before the presets are merged to ensure that default spacing sizes can be
* removed from the theme origin if $prevent_override is true.
*/
$flattened_spacing_scale = array();
foreach ( static::VALID_ORIGINS as $origin ) {
$scale_path = array( 'settings', 'spacing', 'spacingScale', $origin );
// Apply the base spacing scale to the current layer.
$base_spacing_scale = _wp_array_get( $this->theme_json, $scale_path, array() );
$flattened_spacing_scale = array_replace( $flattened_spacing_scale, $base_spacing_scale );
$spacing_scale = _wp_array_get( $incoming_data, $scale_path, null );
if ( ! isset( $spacing_scale ) ) {
continue;
}
// Allow partial scale settings by merging with lower layers.
$flattened_spacing_scale = array_replace( $flattened_spacing_scale, $spacing_scale );
// Generate and merge the scales for this layer.
$sizes_path = array( 'settings', 'spacing', 'spacingSizes', $origin );
$spacing_sizes = _wp_array_get( $incoming_data, $sizes_path, array() );
$spacing_scale_sizes = static::compute_spacing_sizes( $flattened_spacing_scale );
$merged_spacing_sizes = static::merge_spacing_sizes( $spacing_scale_sizes, $spacing_sizes );
_wp_array_set( $incoming_data, $sizes_path, $merged_spacing_sizes );
}
/*
* The array_replace_recursive algorithm merges at the leaf level,
* but we don't want leaf arrays to be merged, so we overwrite it.
*
* For leaf values that are sequential arrays it will use the numeric indexes for replacement.
* We rather replace the existing with the incoming value, if it exists.
* This is the case of spacing.units.
*
* For leaf values that are associative arrays it will merge them as expected.
* This is also not the behavior we want for the current associative arrays (presets).
* We rather replace the existing with the incoming value, if it exists.
* This happens, for example, when we merge data from theme.json upon existing
* theme supports or when we merge anything coming from the same source twice.
* This is the case of color.palette, color.gradients, color.duotone,
* typography.fontSizes, or typography.fontFamilies.
*
* Additionally, for some preset types, we also want to make sure the
* values they introduce don't conflict with default values. We do so
* by checking the incoming slugs for theme presets and compare them
* with the equivalent default presets: if a slug is present as a default
* we remove it from the theme presets.
*/
$nodes = static::get_setting_nodes( $incoming_data );
$slugs_global = static::get_default_slugs( $this->theme_json, array( 'settings' ) );
foreach ( $nodes as $node ) {
// Replace the spacing.units.
$path = $node['path'];
$path[] = 'spacing';
$path[] = 'units';
$content = _wp_array_get( $incoming_data, $path, null );
if ( isset( $content ) ) {
_wp_array_set( $this->theme_json, $path, $content );
}
// Replace the presets.
foreach ( static::PRESETS_METADATA as $preset_metadata ) {
$prevent_override = $preset_metadata['prevent_override'];
if ( is_array( $prevent_override ) ) {
$prevent_override = _wp_array_get( $this->theme_json['settings'], $preset_metadata['prevent_override'] );
}
foreach ( static::VALID_ORIGINS as $origin ) {
$base_path = $node['path'];
foreach ( $preset_metadata['path'] as $leaf ) {
$base_path[] = $leaf;
}
$path = $base_path;
$path[] = $origin;
$content = _wp_array_get( $incoming_data, $path, null );
if ( ! isset( $content ) ) {
continue;
}
// Set names for theme presets based on the slug if they are not set and can use default names.
if ( 'theme' === $origin && $preset_metadata['use_default_names'] ) {
foreach ( $content as $key => $item ) {
if ( ! isset( $item['name'] ) ) {
$name = static::get_name_from_defaults( $item['slug'], $base_path );
if ( null !== $name ) {
$content[ $key ]['name'] = $name;
}
}
}
}
// Filter out default slugs from theme presets when defaults should not be overridden.
if ( 'theme' === $origin && $prevent_override ) {
$slugs_node = static::get_default_slugs( $this->theme_json, $node['path'] );
$preset_global = _wp_array_get( $slugs_global, $preset_metadata['path'], array() );
$preset_node = _wp_array_get( $slugs_node, $preset_metadata['path'], array() );
$preset_slugs = array_merge_recursive( $preset_global, $preset_node );
$content = static::filter_slugs( $content, $preset_slugs );
}
_wp_array_set( $this->theme_json, $path, $content );
}
}
}
/*
* Style values are merged at the leaf level, however
* some values provide exceptions, namely style values that are
* objects and represent unique definitions for the style.
*/
$style_nodes = static::get_block_nodes(
$this->theme_json,
array(),
array( 'include_node_paths_only' => true )
);
foreach ( $style_nodes as $style_node ) {
$path = $style_node['path'];
/*
* Background image styles should be replaced, not merged,
* as they themselves are specific object definitions for the style.
*/
$background_image_path = array_merge( $path, static::PROPERTIES_METADATA['background-image'] );
$content = _wp_array_get( $incoming_data, $background_image_path, null );
if ( isset( $content ) ) {
_wp_array_set( $this->theme_json, $background_image_path, $content );
}
}
}
/**
* Converts all filter (duotone) presets into SVGs.
*
* @since 5.9.1
*
* @param array $origins List of origins to process.
* @return string SVG filters.
*/
public function get_svg_filters( $origins ) {
$blocks_metadata = static::get_blocks_metadata();
$setting_nodes = static::get_setting_nodes( $this->theme_json, $blocks_metadata );
$filters = '';
foreach ( $setting_nodes as $metadata ) {
$node = _wp_array_get( $this->theme_json, $metadata['path'], array() );
if ( empty( $node['color']['duotone'] ) ) {
continue;
}
$duotone_presets = $node['color']['duotone'];
foreach ( $origins as $origin ) {
if ( ! isset( $duotone_presets[ $origin ] ) ) {
continue;
}
foreach ( $duotone_presets[ $origin ] as $duotone_preset ) {
$filters .= wp_get_duotone_filter_svg( $duotone_preset );
}
}
}
return $filters;
}
/**
* Determines whether a presets should be overridden or not.
*
* @since 5.9.0
* @deprecated 6.0.0 Use {@see 'get_metadata_boolean'} instead.
*
* @param array $theme_json The theme.json like structure to inspect.
* @param array $path Path to inspect.
* @param bool|array $override Data to compute whether to override the preset.
* @return bool
*/
protected static function should_override_preset( $theme_json, $path, $override ) {
_deprecated_function( __METHOD__, '6.0.0', 'get_metadata_boolean' );
if ( is_bool( $override ) ) {
return $override;
}
/*
* The relationship between whether to override the defaults
* and whether the defaults are enabled is inverse:
*
* - If defaults are enabled => theme presets should not be overridden
* - If defaults are disabled => theme presets should be overridden
*
* For example, a theme sets defaultPalette to false,
* making the default palette hidden from the user.
* In that case, we want all the theme presets to be present,
* so they should override the defaults.
*/
if ( is_array( $override ) ) {
$value = _wp_array_get( $theme_json, array_merge( $path, $override ) );
if ( isset( $value ) ) {
return ! $value;
}
// Search the top-level key if none was found for this node.
$value = _wp_array_get( $theme_json, array_merge( array( 'settings' ), $override ) );
if ( isset( $value ) ) {
return ! $value;
}
return true;
}
}
/**
* Returns the default slugs for all the presets in an associative array
* whose keys are the preset paths and the leaves is the list of slugs.
*
* For example:
*
* array(
* 'color' => array(
* 'palette' => array( 'slug-1', 'slug-2' ),
* 'gradients' => array( 'slug-3', 'slug-4' ),
* ),
* )
*
* @since 5.9.0
*
* @param array $data A theme.json like structure.
* @param array $node_path The path to inspect. It's 'settings' by default.
* @return array
*/
protected static function get_default_slugs( $data, $node_path ) {
$slugs = array();
foreach ( static::PRESETS_METADATA as $metadata ) {
$path = $node_path;
foreach ( $metadata['path'] as $leaf ) {
$path[] = $leaf;
}
$path[] = 'default';
$preset = _wp_array_get( $data, $path, null );
if ( ! isset( $preset ) ) {
continue;
}
$slugs_for_preset = array();
foreach ( $preset as $item ) {
if ( isset( $item['slug'] ) ) {
$slugs_for_preset[] = $item['slug'];
}
}
_wp_array_set( $slugs, $metadata['path'], $slugs_for_preset );
}
return $slugs;
}
/**
* Gets a `default`'s preset name by a provided slug.
*
* @since 5.9.0
*
* @param string $slug The slug we want to find a match from default presets.
* @param array $base_path The path to inspect. It's 'settings' by default.
* @return string|null
*/
protected function get_name_from_defaults( $slug, $base_path ) {
$path = $base_path;
$path[] = 'default';
$default_content = _wp_array_get( $this->theme_json, $path, null );
if ( ! $default_content ) {
return null;
}
foreach ( $default_content as $item ) {
if ( $slug === $item['slug'] ) {
return $item['name'];
}
}
return null;
}
/**
* Removes the preset values whose slug is equal to any of given slugs.
*
* @since 5.9.0
*
* @param array $node The node with the presets to validate.
* @param array $slugs The slugs that should not be overridden.
* @return array The new node.
*/
protected static function filter_slugs( $node, $slugs ) {
if ( empty( $slugs ) ) {
return $node;
}
$new_node = array();
foreach ( $node as $value ) {
if ( isset( $value['slug'] ) && ! in_array( $value['slug'], $slugs, true ) ) {
$new_node[] = $value;
}
}
return $new_node;
}
/**
* Removes insecure data from theme.json.
*
* @since 5.9.0
* @since 6.3.2 Preserves global styles block variations when securing styles.
* @since 6.6.0 Updated to allow variation element styles and $origin parameter.
*
* @param array $theme_json Structure to sanitize.
* @param string $origin Optional. What source of data this object represents.
* One of 'blocks', 'default', 'theme', or 'custom'. Default 'theme'.
* @return array Sanitized structure.
*/
public static function remove_insecure_properties( $theme_json, $origin = 'theme' ) {
if ( ! in_array( $origin, static::VALID_ORIGINS, true ) ) {
$origin = 'theme';
}
$sanitized = array();
$theme_json = WP_Theme_JSON_Schema::migrate( $theme_json, $origin );
$valid_block_names = array_keys( static::get_blocks_metadata() );
$valid_element_names = array_keys( static::ELEMENTS );
$valid_variations = static::get_valid_block_style_variations();
$theme_json = static::sanitize( $theme_json, $valid_block_names, $valid_element_names, $valid_variations );
$blocks_metadata = static::get_blocks_metadata();
$style_options = array( 'include_block_style_variations' => true ); // Allow variations data.
$style_nodes = static::get_style_nodes( $theme_json, $blocks_metadata, $style_options );
foreach ( $style_nodes as $metadata ) {
$input = _wp_array_get( $theme_json, $metadata['path'], array() );
if ( empty( $input ) ) {
continue;
}
// The global styles custom CSS is not sanitized, but can only be edited by users with 'edit_css' capability.
if ( isset( $input['css'] ) && current_user_can( 'edit_css' ) ) {
$output = $input;
} else {
$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. Re-add and process them
* or insecure styles here.
*/
if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] ) ) {
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 );
}
if ( isset( $metadata['variations'] ) ) {
foreach ( $metadata['variations'] as $variation ) {
$variation_input = _wp_array_get( $theme_json, $variation['path'], array() );
if ( empty( $variation_input ) ) {
continue;
}
$variation_output = static::remove_insecure_styles( $variation_input );
// Process a variation's elements and element pseudo selector styles.
if ( isset( $variation_input['elements'] ) ) {
foreach ( $valid_element_names as $element_name ) {
$element_input = $variation_input['elements'][ $element_name ] ?? null;
if ( $element_input ) {
$element_output = static::remove_insecure_styles( $element_input );
if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element_name ] ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element_name ] as $pseudo_selector ) {
if ( isset( $element_input[ $pseudo_selector ] ) ) {
$element_output[ $pseudo_selector ] = static::remove_insecure_styles( $element_input[ $pseudo_selector ] );
}
}
}
if ( ! empty( $element_output ) ) {
_wp_array_set( $variation_output, array( 'elements', $element_name ), $element_output );
}
}
}
}
if ( ! empty( $variation_output ) ) {
_wp_array_set( $sanitized, $variation['path'], $variation_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;
}
/**
* Processes a setting node and returns the same node
* without the insecure settings.
*
* @since 5.9.0
*
* @param array $input Node to process.
* @return array
*/
protected static function remove_insecure_settings( $input ) {
$output = array();
foreach ( static::PRESETS_METADATA as $preset_metadata ) {
foreach ( static::VALID_ORIGINS as $origin ) {
$path_with_origin = $preset_metadata['path'];
$path_with_origin[] = $origin;
$presets = _wp_array_get( $input, $path_with_origin, null );
if ( null === $presets ) {
continue;
}
$escaped_preset = array();
foreach ( $presets as $preset ) {
if (
esc_attr( esc_html( $preset['name'] ) ) === $preset['name'] &&
sanitize_html_class( $preset['slug'] ) === $preset['slug']
) {
$value = null;
if ( isset( $preset_metadata['value_key'], $preset[ $preset_metadata['value_key'] ] ) ) {
$value = $preset[ $preset_metadata['value_key'] ];
} elseif (
isset( $preset_metadata['value_func'] ) &&
is_callable( $preset_metadata['value_func'] )
) {
$value = call_user_func( $preset_metadata['value_func'], $preset );
}
$preset_is_valid = true;
foreach ( $preset_metadata['properties'] as $property ) {
if ( ! static::is_safe_css_declaration( $property, $value ) ) {
$preset_is_valid = false;
break;
}
}
if ( $preset_is_valid ) {
$escaped_preset[] = $preset;
}
}
}
if ( ! empty( $escaped_preset ) ) {
_wp_array_set( $output, $path_with_origin, $escaped_preset );
}
}
}
// Ensure indirect properties not included in any `PRESETS_METADATA` value are allowed.
static::remove_indirect_properties( $input, $output );
return $output;
}
/**
* Processes a style node and returns the same node
* without the insecure styles.
*
* @since 5.9.0
*
* @param array $input Node to process.
* @return array
*/
protected static function remove_insecure_styles( $input ) {
$output = array();
$declarations = static::compute_style_properties( $input );
foreach ( $declarations as $declaration ) {
if ( static::is_safe_css_declaration( $declaration['name'], $declaration['value'] ) ) {
$path = static::PROPERTIES_METADATA[ $declaration['name'] ];
/*
* Check the value isn't an array before adding so as to not
* double up shorthand and longhand styles.
*/
$value = _wp_array_get( $input, $path, array() );
if ( ! is_array( $value ) ) {
_wp_array_set( $output, $path, $value );
}
}
}
// Ensure indirect properties not handled by `compute_style_properties` are allowed.
static::remove_indirect_properties( $input, $output );
return $output;
}
/**
* Checks that a declaration provided by the user is safe.
*
* @since 5.9.0
*
* @param string $property_name Property name in a CSS declaration, i.e. the `color` in `color: red`.
* @param string $property_value Value in a CSS declaration, i.e. the `red` in `color: red`.
* @return bool
*/
protected static function is_safe_css_declaration( $property_name, $property_value ) {
$style_to_validate = $property_name . ': ' . $property_value;
$filtered = esc_html( safecss_filter_attr( $style_to_validate ) );
return ! empty( trim( $filtered ) );
}
/**
* Removes indirect properties from the given input node and
* sets in the given output node.
*
* @since 6.2.0
*
* @param array $input Node to process.
* @param array $output The processed node. Passed by reference.
*/
private static function remove_indirect_properties( $input, &$output ) {
foreach ( static::INDIRECT_PROPERTIES_METADATA as $property => $paths ) {
foreach ( $paths as $path ) {
$value = _wp_array_get( $input, $path );
if (
is_string( $value ) &&
static::is_safe_css_declaration( $property, $value )
) {
_wp_array_set( $output, $path, $value );
}
}
}
}
/**
* Returns the raw data.
*
* @since 5.8.0
*
* @return array Raw data.
*/
public function get_raw_data() {
return $this->theme_json;
}
/**
* Transforms the given editor settings according the
* add_theme_support format to the theme.json format.
*
* @since 5.8.0
*
* @param array $settings Existing editor settings.
* @return array Config that adheres to the theme.json schema.
*/
public static function get_from_editor_settings( $settings ) {
$theme_settings = array(
'version' => static::LATEST_SCHEMA,
'settings' => array(),
);
// Deprecated theme supports.
if ( isset( $settings['disableCustomColors'] ) ) {
$theme_settings['settings']['color']['custom'] = ! $settings['disableCustomColors'];
}
if ( isset( $settings['disableCustomGradients'] ) ) {
$theme_settings['settings']['color']['customGradient'] = ! $settings['disableCustomGradients'];
}
if ( isset( $settings['disableCustomFontSizes'] ) ) {
$theme_settings['settings']['typography']['customFontSize'] = ! $settings['disableCustomFontSizes'];
}
if ( isset( $settings['enableCustomLineHeight'] ) ) {
$theme_settings['settings']['typography']['lineHeight'] = $settings['enableCustomLineHeight'];
}
if ( isset( $settings['enableCustomUnits'] ) ) {
$theme_settings['settings']['spacing']['units'] = ( true === $settings['enableCustomUnits'] ) ?
array( 'px', 'em', 'rem', 'vh', 'vw', '%' ) :
$settings['enableCustomUnits'];
}
if ( isset( $settings['colors'] ) ) {
$theme_settings['settings']['color']['palette'] = $settings['colors'];
}
if ( isset( $settings['gradients'] ) ) {
$theme_settings['settings']['color']['gradients'] = $settings['gradients'];
}
if ( isset( $settings['fontSizes'] ) ) {
$font_sizes = $settings['fontSizes'];
// Back-compatibility for presets without units.
foreach ( $font_sizes as $key => $font_size ) {
if ( is_numeric( $font_size['size'] ) ) {
$font_sizes[ $key ]['size'] = $font_size['size'] . 'px';
}
}
$theme_settings['settings']['typography']['fontSizes'] = $font_sizes;
}
if ( isset( $settings['enableCustomSpacing'] ) ) {
$theme_settings['settings']['spacing']['padding'] = $settings['enableCustomSpacing'];
}
if ( isset( $settings['spacingSizes'] ) ) {
$theme_settings['settings']['spacing']['spacingSizes'] = $settings['spacingSizes'];
}
return $theme_settings;
}
/**
* Returns the current theme's wanted patterns(slugs) to be
* registered from Pattern Directory.
*
* @since 6.0.0
*
* @return string[]
*/
public function get_patterns() {
if ( isset( $this->theme_json['patterns'] ) && is_array( $this->theme_json['patterns'] ) ) {
return $this->theme_json['patterns'];
}
return array();
}
/**
* Returns a valid theme.json as provided by a theme.
*
* Unlike get_raw_data() this returns the presets flattened, as provided by a theme.
* This also uses appearanceTools instead of their opt-ins if all of them are true.
*
* @since 6.0.0
*
* @return array
*/
public function get_data() {
$output = $this->theme_json;
$nodes = static::get_setting_nodes( $output );
/**
* Flatten the theme & custom origins into a single one.
*
* For example, the following:
*
* {
* "settings": {
* "color": {
* "palette": {
* "theme": [ {} ],
* "custom": [ {} ]
* }
* }
* }
* }
*
* will be converted to:
*
* {
* "settings": {
* "color": {
* "palette": [ {} ]
* }
* }
* }
*/
foreach ( $nodes as $node ) {
foreach ( static::PRESETS_METADATA as $preset_metadata ) {
$path = $node['path'];
foreach ( $preset_metadata['path'] as $preset_metadata_path ) {
$path[] = $preset_metadata_path;
}
$preset = _wp_array_get( $output, $path, null );
if ( null === $preset ) {
continue;
}
$items = array();
if ( isset( $preset['theme'] ) ) {
foreach ( $preset['theme'] as $item ) {
$slug = $item['slug'];
unset( $item['slug'] );
$items[ $slug ] = $item;
}
}
if ( isset( $preset['custom'] ) ) {
foreach ( $preset['custom'] as $item ) {
$slug = $item['slug'];
unset( $item['slug'] );
$items[ $slug ] = $item;
}
}
$flattened_preset = array();
foreach ( $items as $slug => $value ) {
$flattened_preset[] = array_merge( array( 'slug' => (string) $slug ), $value );
}
_wp_array_set( $output, $path, $flattened_preset );
}
}
/*
* If all of the static::APPEARANCE_TOOLS_OPT_INS are true,
* this code unsets them and sets 'appearanceTools' instead.
*/
foreach ( $nodes as $node ) {
$all_opt_ins_are_set = true;
foreach ( static::APPEARANCE_TOOLS_OPT_INS as $opt_in_path ) {
$full_path = $node['path'];
foreach ( $opt_in_path as $opt_in_path_item ) {
$full_path[] = $opt_in_path_item;
}
/*
* Use "unset prop" as a marker instead of "null" because
* "null" can be a valid value for some props (e.g. blockGap).
*/
$opt_in_value = _wp_array_get( $output, $full_path, 'unset prop' );
if ( 'unset prop' === $opt_in_value ) {
$all_opt_ins_are_set = false;
break;
}
}
if ( $all_opt_ins_are_set ) {
$node_path_with_appearance_tools = $node['path'];
$node_path_with_appearance_tools[] = 'appearanceTools';
_wp_array_set( $output, $node_path_with_appearance_tools, true );
foreach ( static::APPEARANCE_TOOLS_OPT_INS as $opt_in_path ) {
$full_path = $node['path'];
foreach ( $opt_in_path as $opt_in_path_item ) {
$full_path[] = $opt_in_path_item;
}
/*
* Use "unset prop" as a marker instead of "null" because
* "null" can be a valid value for some props (e.g. blockGap).
*/
$opt_in_value = _wp_array_get( $output, $full_path, 'unset prop' );
if ( true !== $opt_in_value ) {
continue;
}
/*
* The following could be improved to be path independent.
* At the moment it relies on a couple of assumptions:
*
* - all opt-ins having a path of size 2.
* - there's two sources of settings: the top-level and the block-level.
*/
if (
( 1 === count( $node['path'] ) ) &&
( 'settings' === $node['path'][0] )
) {
// Top-level settings.
unset( $output['settings'][ $opt_in_path[0] ][ $opt_in_path[1] ] );
if ( empty( $output['settings'][ $opt_in_path[0] ] ) ) {
unset( $output['settings'][ $opt_in_path[0] ] );
}
} elseif (
( 3 === count( $node['path'] ) ) &&
( 'settings' === $node['path'][0] ) &&
( 'blocks' === $node['path'][1] )
) {
// Block-level settings.
$block_name = $node['path'][2];
unset( $output['settings']['blocks'][ $block_name ][ $opt_in_path[0] ][ $opt_in_path[1] ] );
if ( empty( $output['settings']['blocks'][ $block_name ][ $opt_in_path[0] ] ) ) {
unset( $output['settings']['blocks'][ $block_name ][ $opt_in_path[0] ] );
}
}
}
}
}
wp_recursive_ksort( $output );
return $output;
}
/**
* Sets the spacingSizes array based on the spacingScale values from theme.json.
*
* @since 6.1.0
* @deprecated 6.6.0 No longer used as the spacingSizes are automatically
* generated in the constructor and merge methods instead
* of manually after instantiation.
*
* @return null|void
*/
public function set_spacing_sizes() {
_deprecated_function( __METHOD__, '6.6.0' );
$spacing_scale = isset( $this->theme_json['settings']['spacing']['spacingScale'] )
? $this->theme_json['settings']['spacing']['spacingScale']
: array();
if ( ! isset( $spacing_scale['steps'] )
|| ! is_numeric( $spacing_scale['steps'] )
|| ! isset( $spacing_scale['mediumStep'] )
|| ! isset( $spacing_scale['unit'] )
|| ! isset( $spacing_scale['operator'] )
|| ! isset( $spacing_scale['increment'] )
|| ! isset( $spacing_scale['steps'] )
|| ! is_numeric( $spacing_scale['increment'] )
|| ! is_numeric( $spacing_scale['mediumStep'] )
|| ( '+' !== $spacing_scale['operator'] && '*' !== $spacing_scale['operator'] ) ) {
if ( ! empty( $spacing_scale ) ) {
wp_trigger_error(
__METHOD__,
sprintf(
/* translators: 1: theme.json, 2: settings.spacing.spacingScale */
__( 'Some of the %1$s %2$s values are invalid' ),
'theme.json',
'settings.spacing.spacingScale'
),
E_USER_NOTICE
);
}
return null;
}
// If theme authors want to prevent the generation of the core spacing scale they can set their theme.json spacingScale.steps to 0.
if ( 0 === $spacing_scale['steps'] ) {
return null;
}
$spacing_sizes = static::compute_spacing_sizes( $spacing_scale );
// If there are 7 or fewer steps in the scale revert to numbers for labels instead of t-shirt sizes.
if ( $spacing_scale['steps'] <= 7 ) {
for ( $spacing_sizes_count = 0; $spacing_sizes_count < count( $spacing_sizes ); $spacing_sizes_count++ ) {
$spacing_sizes[ $spacing_sizes_count ]['name'] = (string) ( $spacing_sizes_count + 1 );
}
}
_wp_array_set( $this->theme_json, array( 'settings', 'spacing', 'spacingSizes', 'default' ), $spacing_sizes );
}
/**
* Merges two sets of spacing size presets.
*
* @since 6.6.0
*
* @param array $base The base set of spacing sizes.
* @param array $incoming The set of spacing sizes to merge with the base. Duplicate slugs will override the base values.
* @return array The merged set of spacing sizes.
*/
private static function merge_spacing_sizes( $base, $incoming ) {
// Preserve the order if there are no base (spacingScale) values.
if ( empty( $base ) ) {
return $incoming;
}
$merged = array();
foreach ( $base as $item ) {
$merged[ $item['slug'] ] = $item;
}
foreach ( $incoming as $item ) {
$merged[ $item['slug'] ] = $item;
}
ksort( $merged, SORT_NUMERIC );
return array_values( $merged );
}
/**
* Generates a set of spacing sizes by starting with a medium size and
* applying an operator with an increment value to generate the rest of the
* sizes outward from the medium size. The medium slug is '50' with the rest
* of the slugs being 10 apart. The generated names use t-shirt sizing.
*
* Example:
*
* $spacing_scale = array(
* 'steps' => 4,
* 'mediumStep' => 16,
* 'unit' => 'px',
* 'operator' => '+',
* 'increment' => 2,
* );
* $spacing_sizes = static::compute_spacing_sizes( $spacing_scale );
* // -> array(
* // array( 'name' => 'Small', 'slug' => '40', 'size' => '14px' ),
* // array( 'name' => 'Medium', 'slug' => '50', 'size' => '16px' ),
* // array( 'name' => 'Large', 'slug' => '60', 'size' => '18px' ),
* // array( 'name' => 'X-Large', 'slug' => '70', 'size' => '20px' ),
* // )
*
* @since 6.6.0
*
* @param array $spacing_scale {
* The spacing scale values. All are required.
*
* @type int $steps The number of steps in the scale. (up to 10 steps are supported.)
* @type float $mediumStep The middle value that gets the slug '50'. (For even number of steps, this becomes the first middle value.)
* @type string $unit The CSS unit to use for the sizes.
* @type string $operator The mathematical operator to apply to generate the other sizes. Either '+' or '*'.
* @type float $increment The value used with the operator to generate the other sizes.
* }
* @return array The spacing sizes presets or an empty array if some spacing scale values are missing or invalid.
*/
private static function compute_spacing_sizes( $spacing_scale ) {
/*
* This condition is intentionally missing some checks on ranges for the values in order to
* keep backwards compatibility with the previous implementation.
*/
if (
! isset( $spacing_scale['steps'] ) ||
! is_numeric( $spacing_scale['steps'] ) ||
0 === $spacing_scale['steps'] ||
! isset( $spacing_scale['mediumStep'] ) ||
! is_numeric( $spacing_scale['mediumStep'] ) ||
! isset( $spacing_scale['unit'] ) ||
! isset( $spacing_scale['operator'] ) ||
( '+' !== $spacing_scale['operator'] && '*' !== $spacing_scale['operator'] ) ||
! isset( $spacing_scale['increment'] ) ||
! is_numeric( $spacing_scale['increment'] )
) {
return array();
}
$unit = '%' === $spacing_scale['unit'] ? '%' : sanitize_title( $spacing_scale['unit'] );
$current_step = $spacing_scale['mediumStep'];
$steps_mid_point = round( $spacing_scale['steps'] / 2, 0 );
$x_small_count = null;
$below_sizes = array();
$slug = 40;
$remainder = 0;
for ( $below_midpoint_count = $steps_mid_point - 1; $spacing_scale['steps'] > 1 && $slug > 0 && $below_midpoint_count > 0; $below_midpoint_count-- ) {
if ( '+' === $spacing_scale['operator'] ) {
$current_step -= $spacing_scale['increment'];
} elseif ( $spacing_scale['increment'] > 1 ) {
$current_step /= $spacing_scale['increment'];
} else {
$current_step *= $spacing_scale['increment'];
}
if ( $current_step <= 0 ) {
$remainder = $below_midpoint_count;
break;
}
$below_sizes[] = array(
/* translators: %s: Digit to indicate multiple of sizing, eg. 2X-Small. */
'name' => $below_midpoint_count === $steps_mid_point - 1 ? __( 'Small' ) : sprintf( __( '%sX-Small' ), (string) $x_small_count ),
'slug' => (string) $slug,
'size' => round( $current_step, 2 ) . $unit,
);
if ( $below_midpoint_count === $steps_mid_point - 2 ) {
$x_small_count = 2;
}
if ( $below_midpoint_count < $steps_mid_point - 2 ) {
++$x_small_count;
}
$slug -= 10;
}
$below_sizes = array_reverse( $below_sizes );
$below_sizes[] = array(
'name' => __( 'Medium' ),
'slug' => '50',
'size' => $spacing_scale['mediumStep'] . $unit,
);
$current_step = $spacing_scale['mediumStep'];
$x_large_count = null;
$above_sizes = array();
$slug = 60;
$steps_above = ( $spacing_scale['steps'] - $steps_mid_point ) + $remainder;
for ( $above_midpoint_count = 0; $above_midpoint_count < $steps_above; $above_midpoint_count++ ) {
$current_step = '+' === $spacing_scale['operator']
? $current_step + $spacing_scale['increment']
: ( $spacing_scale['increment'] >= 1 ? $current_step * $spacing_scale['increment'] : $current_step / $spacing_scale['increment'] );
$above_sizes[] = array(
/* translators: %s: Digit to indicate multiple of sizing, eg. 2X-Large. */
'name' => 0 === $above_midpoint_count ? __( 'Large' ) : sprintf( __( '%sX-Large' ), (string) $x_large_count ),
'slug' => (string) $slug,
'size' => round( $current_step, 2 ) . $unit,
);
if ( 1 === $above_midpoint_count ) {
$x_large_count = 2;
}
if ( $above_midpoint_count > 1 ) {
++$x_large_count;
}
$slug += 10;
}
$spacing_sizes = $below_sizes;
foreach ( $above_sizes as $above_sizes_item ) {
$spacing_sizes[] = $above_sizes_item;
}
return $spacing_sizes;
}
/**
* This is used to convert the internal representation of variables to the CSS representation.
* For example, `var:preset|color|vivid-green-cyan` becomes `var(--wp--preset--color--vivid-green-cyan)`.
*
* @since 6.3.0
* @param string $value The variable such as var:preset|color|vivid-green-cyan to convert.
* @return string The converted variable.
*/
private static function convert_custom_properties( $value ) {
$prefix = 'var:';
$prefix_len = strlen( $prefix );
$token_in = '|';
$token_out = '--';
if ( str_starts_with( $value, $prefix ) ) {
$unwrapped_name = str_replace(
$token_in,
$token_out,
substr( $value, $prefix_len )
);
$value = "var(--wp--$unwrapped_name)";
}
return $value;
}
/**
* Given a tree, converts the internal representation of variables to the CSS representation.
* It is recursive and modifies the input in-place.
*
* @since 6.3.0
* @param array $tree Input to process.
* @return array The modified $tree.
*/
private static function resolve_custom_css_format( $tree ) {
$prefix = 'var:';
foreach ( $tree as $key => $data ) {
if ( is_string( $data ) && str_starts_with( $data, $prefix ) ) {
$tree[ $key ] = self::convert_custom_properties( $data );
} elseif ( is_array( $data ) ) {
$tree[ $key ] = self::resolve_custom_css_format( $data );
}
}
return $tree;
}
/**
* Returns the selectors metadata for a block.
*
* @since 6.3.0
*
* @param object $block_type The block type.
* @param string $root_selector The block's root selector.
*
* @return array The custom selectors set by the block.
*/
protected static function get_block_selectors( $block_type, $root_selector ) {
if ( ! empty( $block_type->selectors ) ) {
return $block_type->selectors;
}
$selectors = array( 'root' => $root_selector );
foreach ( static::BLOCK_SUPPORT_FEATURE_LEVEL_SELECTORS as $key => $feature ) {
$feature_selector = wp_get_block_css_selector( $block_type, $key );
if ( null !== $feature_selector ) {
$selectors[ $feature ] = array( 'root' => $feature_selector );
}
}
return $selectors;
}
/**
* Generates all the element selectors for a block.
*
* @since 6.3.0
*
* @param string $root_selector The block's root CSS selector.
* @return array The block's element selectors.
*/
protected static function get_block_element_selectors( $root_selector ) {
/*
* Assign defaults, then override 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( ',', $root_selector );
$element_selectors = array();
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::prepend_to_selector( $el_selector, $selector . ' ' );
}
$element_selectors[ $el_name ] = implode( ',', $element_selector );
}
return $element_selectors;
}
/**
* Generates style declarations for a node's features e.g., color, border,
* typography etc. that have custom selectors in their related block's
* metadata.
*
* @since 6.3.0
*
* @param object $metadata The related block metadata containing selectors.
* @param object $node A merged theme.json node for block or variation.
*
* @return array The style declarations for the node's features with custom
* selectors.
*/
protected function get_feature_declarations_for_node( $metadata, &$node ) {
$declarations = array();
if ( ! isset( $metadata['selectors'] ) ) {
return $declarations;
}
$settings = isset( $this->theme_json['settings'] )
? $this->theme_json['settings']
: array();
foreach ( $metadata['selectors'] as $feature => $feature_selectors ) {
/*
* Skip if this is the block's root selector or the block doesn't
* have any styles for the feature.
*/
if ( 'root' === $feature || empty( $node[ $feature ] ) ) {
continue;
}
if ( is_array( $feature_selectors ) ) {
foreach ( $feature_selectors as $subfeature => $subfeature_selector ) {
if ( 'root' === $subfeature || empty( $node[ $feature ][ $subfeature ] ) ) {
continue;
}
/*
* Create temporary node containing only the subfeature data
* to leverage existing `compute_style_properties` function.
*/
$subfeature_node = array(
$feature => array(
$subfeature => $node[ $feature ][ $subfeature ],
),
);
// Generate style declarations.
$new_declarations = static::compute_style_properties( $subfeature_node, $settings, null, $this->theme_json );
// Merge subfeature declarations into feature declarations.
if ( isset( $declarations[ $subfeature_selector ] ) ) {
foreach ( $new_declarations as $new_declaration ) {
$declarations[ $subfeature_selector ][] = $new_declaration;
}
} else {
$declarations[ $subfeature_selector ] = $new_declarations;
}
/*
* Remove the subfeature from the block's node now its
* styles will be included under its own selector not the
* block's.
*/
unset( $node[ $feature ][ $subfeature ] );
}
}
/*
* Now subfeatures have been processed and removed we can process
* feature root selector or simple string selector.
*/
if (
is_string( $feature_selectors ) ||
( isset( $feature_selectors['root'] ) && $feature_selectors['root'] )
) {
$feature_selector = is_string( $feature_selectors ) ? $feature_selectors : $feature_selectors['root'];
/*
* Create temporary node containing only the feature data
* to leverage existing `compute_style_properties` function.
*/
$feature_node = array( $feature => $node[ $feature ] );
// Generate the style declarations.
$new_declarations = static::compute_style_properties( $feature_node, $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( $declarations[ $feature_selector ] ) ) {
foreach ( $new_declarations as $new_declaration ) {
$declarations[ $feature_selector ][] = $new_declaration;
}
} else {
$declarations[ $feature_selector ] = $new_declarations;
}
/*
* Remove the feature from the block's node now its styles
* will be included under its own selector not the block's.
*/
unset( $node[ $feature ] );
}
}
return $declarations;
}
/**
* Replaces CSS variables with their values in place.
*
* @since 6.3.0
* @since 6.5.0 Check for empty style before processing its value.
*
* @param array $styles CSS declarations to convert.
* @param array $values key => value pairs to use for replacement.
* @return array
*/
private static function convert_variables_to_value( $styles, $values ) {
foreach ( $styles as $key => $style ) {
if ( empty( $style ) ) {
continue;
}
if ( is_array( $style ) ) {
$styles[ $key ] = self::convert_variables_to_value( $style, $values );
continue;
}
if ( 0 <= strpos( $style, 'var(' ) ) {
// find all the variables in the string in the form of var(--variable-name, fallback), with fallback in the second capture group.
$has_matches = preg_match_all( '/var\(([^),]+)?,?\s?(\S+)?\)/', $style, $var_parts );
if ( $has_matches ) {
$resolved_style = $styles[ $key ];
foreach ( $var_parts[1] as $index => $var_part ) {
$key_in_values = 'var(' . $var_part . ')';
$rule_to_replace = $var_parts[0][ $index ]; // the css rule to replace e.g. var(--wp--preset--color--vivid-green-cyan).
$fallback = $var_parts[2][ $index ]; // the fallback value.
$resolved_style = str_replace(
array(
$rule_to_replace,
$fallback,
),
array(
isset( $values[ $key_in_values ] ) ? $values[ $key_in_values ] : $rule_to_replace,
isset( $values[ $fallback ] ) ? $values[ $fallback ] : $fallback,
),
$resolved_style
);
}
$styles[ $key ] = $resolved_style;
}
}
}
return $styles;
}
/**
* Resolves the values of CSS variables in the given styles.
*
* @since 6.3.0
* @param WP_Theme_JSON $theme_json The theme json resolver.
*
* @return WP_Theme_JSON The $theme_json with resolved variables.
*/
public static function resolve_variables( $theme_json ) {
$settings = $theme_json->get_settings();
$styles = $theme_json->get_raw_data()['styles'];
$preset_vars = static::compute_preset_vars( $settings, static::VALID_ORIGINS );
$theme_vars = static::compute_theme_vars( $settings );
$vars = array_reduce(
array_merge( $preset_vars, $theme_vars ),
function ( $carry, $item ) {
$name = $item['name'];
$carry[ "var({$name})" ] = $item['value'];
return $carry;
},
array()
);
$theme_json->theme_json['styles'] = self::convert_variables_to_value( $styles, $vars );
return $theme_json;
}
/**
* Generates a selector for a block style variation.
*
* @since 6.5.0
*
* @param string $variation_name Name of the block style variation.
* @param string $block_selector CSS selector for the block.
* @return string Block selector with block style variation selector added to it.
*/
protected static function get_block_style_variation_selector( $variation_name, $block_selector ) {
$variation_class = ".is-style-$variation_name";
if ( ! $block_selector ) {
return $variation_class;
}
$limit = 1;
$selector_parts = explode( ',', $block_selector );
$result = array();
foreach ( $selector_parts as $part ) {
$result[] = preg_replace_callback(
'/((?::\([^)]+\))?\s*)([^\s:]+)/',
function ( $matches ) use ( $variation_class ) {
return $matches[1] . $matches[2] . $variation_class;
},
$part,
$limit
);
}
return implode( ',', $result );
}
/**
* Collects valid block style variations keyed by block type.
*
* @since 6.6.0
*
* @return array Valid block style variations by block type.
*/
protected static function get_valid_block_style_variations() {
$valid_variations = array();
foreach ( self::get_blocks_metadata() as $block_name => $block_meta ) {
if ( ! isset( $block_meta['styleVariations'] ) ) {
continue;
}
$valid_variations[ $block_name ] = array_keys( $block_meta['styleVariations'] );
}
return $valid_variations;
}
}
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