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class-wp-theme-json.php
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class-wp-theme-json.php
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<?php
/**
* WP_Theme_JSON class
*
* @package WordPress
* @subpackage Theme
* @since 5.8.0
*/
/**
* 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
*/
#[AllowDynamicProperties]
class WP_Theme_JSON {
/**
* Container of data in theme.json format.
*
* @since 5.8.0
* @var array
*/
protected $theme_json = null;
/**
* Holds block metadata extracted from block.json
* to be shared among all instances so we don't
* process it twice.
*
* @since 5.8.0
* @since 6.1.0 Initialize as an empty array.
* @var array
*/
protected static $blocks_metadata = array();
/**
* The CSS selector for the top-level preset settings.
*
* @since 6.6.0
* @var string
*/
const ROOT_CSS_PROPERTIES_SELECTOR = ':root';
/**
* The CSS selector for the top-level styles.
*
* @since 5.8.0
* @var string
*/
const ROOT_BLOCK_SELECTOR = 'body';
/**
* The sources of data this object can represent.
*
* @since 5.8.0
* @since 6.1.0 Added 'blocks'.
* @var string[]
*/
const VALID_ORIGINS = array(
'default',
'blocks',
'theme',
'custom',
);
/**
* 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:
*
* array(
* array(
* 'slug' => 'unique-name-within-the-set',
* 'name' => 'Name for the UI',
* <value_key> => 'value'
* ),
* )
*
* This contains the necessary metadata to process them:
*
* - path => Where to find the preset within the settings section.
* - prevent_override => Disables override of default presets by theme presets.
* 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 by setting this false.
* - use_default_names => whether to use the default names
* - value_key => the key that represents the value
* - value_func => optionally, instead of value_key, a function to generate
* the value that takes a preset as an argument
* (either value_key or value_func should be present)
* - css_vars => template string to use in generating the CSS Custom Property.
* Example output: "--wp--preset--duotone--blue: <value>" will generate as many CSS Custom Properties as presets defined
* substituting the $slug for the slug's value for each preset value.
* - classes => array containing a structure with the classes to
* generate for the presets, where for each array item
* the key is the class name and the value the property name.
* The "$slug" substring will be replaced by the slug of each preset.
* For example:
* 'classes' => array(
* '.has-$slug-color' => 'color',
* '.has-$slug-background-color' => 'background-color',
* '.has-$slug-border-color' => 'border-color',
* )
* - properties => array of CSS properties to be used by kses to
* validate the content of each preset
* by means of the remove_insecure_properties method.
*
* @since 5.8.0
* @since 5.9.0 Added the `color.duotone` and `typography.fontFamilies` presets,
* `use_default_names` preset key, and simplified the metadata structure.
* @since 6.0.0 Replaced `override` with `prevent_override` and updated the
* `prevent_override` value for `color.duotone` to use `color.defaultDuotone`.
* @since 6.2.0 Added 'shadow' presets.
* @since 6.3.0 Replaced value_func for duotone with `null`. Custom properties are handled by class-wp-duotone.php.
* @since 6.6.0 Added the `dimensions.aspectRatios` and `dimensions.defaultAspectRatios` presets.
* Updated the 'prevent_override' value for font size presets to use 'typography.defaultFontSizes'
* and spacing size presets to use `spacing.defaultSpacingSizes`.
* @var array
*/
const PRESETS_METADATA = array(
array(
'path' => array( 'dimensions', 'aspectRatios' ),
'prevent_override' => array( 'dimensions', 'defaultAspectRatios' ),
'use_default_names' => false,
'value_key' => 'ratio',
'css_vars' => '--wp--preset--aspect-ratio--$slug',
'classes' => array(),
'properties' => array( 'aspect-ratio' ),
),
array(
'path' => array( 'color', 'palette' ),
'prevent_override' => array( 'color', 'defaultPalette' ),
'use_default_names' => false,
'value_key' => 'color',
'css_vars' => '--wp--preset--color--$slug',
'classes' => array(
'.has-$slug-color' => 'color',
'.has-$slug-background-color' => 'background-color',
'.has-$slug-border-color' => 'border-color',
),
'properties' => array( 'color', 'background-color', 'border-color' ),
),
array(
'path' => array( 'color', 'gradients' ),
'prevent_override' => array( 'color', 'defaultGradients' ),
'use_default_names' => false,
'value_key' => 'gradient',
'css_vars' => '--wp--preset--gradient--$slug',
'classes' => array( '.has-$slug-gradient-background' => 'background' ),
'properties' => array( 'background' ),
),
array(
'path' => array( 'color', 'duotone' ),
'prevent_override' => array( 'color', 'defaultDuotone' ),
'use_default_names' => false,
'value_func' => null, // CSS Custom Properties for duotone are handled by block supports in class-wp-duotone.php.
'css_vars' => null,
'classes' => array(),
'properties' => array( 'filter' ),
),
array(
'path' => array( 'typography', 'fontSizes' ),
'prevent_override' => array( 'typography', 'defaultFontSizes' ),
'use_default_names' => true,
'value_func' => 'wp_get_typography_font_size_value',
'css_vars' => '--wp--preset--font-size--$slug',
'classes' => array( '.has-$slug-font-size' => 'font-size' ),
'properties' => array( 'font-size' ),
),
array(
'path' => array( 'typography', 'fontFamilies' ),
'prevent_override' => false,
'use_default_names' => false,
'value_key' => 'fontFamily',
'css_vars' => '--wp--preset--font-family--$slug',
'classes' => array( '.has-$slug-font-family' => 'font-family' ),
'properties' => array( 'font-family' ),
),
array(
'path' => array( 'spacing', 'spacingSizes' ),
'prevent_override' => array( 'spacing', 'defaultSpacingSizes' ),
'use_default_names' => true,
'value_key' => 'size',
'css_vars' => '--wp--preset--spacing--$slug',
'classes' => array(),
'properties' => array( 'padding', 'margin' ),
),
array(
'path' => array( 'shadow', 'presets' ),
'prevent_override' => array( 'shadow', 'defaultPresets' ),
'use_default_names' => false,
'value_key' => 'shadow',
'css_vars' => '--wp--preset--shadow--$slug',
'classes' => array(),
'properties' => array( 'box-shadow' ),
),
);
/**
* 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.
*
* @since 5.8.0
* @since 5.9.0 Added the `border-*`, `font-family`, `font-style`, `font-weight`,
* `letter-spacing`, `margin-*`, `padding-*`, `--wp--style--block-gap`,
* `text-decoration`, `text-transform`, and `filter` properties,
* simplified the metadata structure.
* @since 6.1.0 Added the `border-*-color`, `border-*-width`, `border-*-style`,
* `--wp--style--root--padding-*`, and `box-shadow` properties,
* removed the `--wp--style--block-gap` property.
* @since 6.2.0 Added `outline-*`, and `min-height` properties.
* @since 6.3.0 Added `column-count` property.
* @since 6.4.0 Added `writing-mode` property.
* @since 6.5.0 Added `aspect-ratio` property.
* @since 6.6.0 Added `background-[image|position|repeat|size]` properties.
* @since 6.7.0 Added `background-attachment` property.
*
* @var array
*/
const PROPERTIES_METADATA = array(
'aspect-ratio' => array( 'dimensions', 'aspectRatio' ),
'background' => array( 'color', 'gradient' ),
'background-color' => array( 'color', 'background' ),
'background-image' => array( 'background', 'backgroundImage' ),
'background-position' => array( 'background', 'backgroundPosition' ),
'background-repeat' => array( 'background', 'backgroundRepeat' ),
'background-size' => array( 'background', 'backgroundSize' ),
'background-attachment' => array( 'background', 'backgroundAttachment' ),
'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' ),
'text-align' => array( 'typography', 'textAlign' ),
'column-count' => array( 'typography', 'textColumns' ),
'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' ),
'min-height' => array( 'dimensions', 'minHeight' ),
'outline-color' => array( 'outline', 'color' ),
'outline-offset' => array( 'outline', 'offset' ),
'outline-style' => array( 'outline', 'style' ),
'outline-width' => array( 'outline', 'width' ),
'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' ),
'box-shadow' => array( 'shadow' ),
'writing-mode' => array( 'typography', 'writingMode' ),
);
/**
* Indirect metadata for style properties that are not directly output.
*
* Each element maps from a CSS property name to an array of
* paths to the value in theme.json & block attributes.
*
* Indirect properties are not output directly by `compute_style_properties`,
* but are used elsewhere in the processing of global styles. The indirect
* property is used to validate whether a style value is allowed.
*
* @since 6.2.0
* @since 6.6.0 Added background-image properties.
*
* @var array
*/
const INDIRECT_PROPERTIES_METADATA = array(
'gap' => array(
array( 'spacing', 'blockGap' ),
),
'column-gap' => array(
array( 'spacing', 'blockGap', 'left' ),
),
'row-gap' => array(
array( 'spacing', 'blockGap', 'top' ),
),
'max-width' => array(
array( 'layout', 'contentSize' ),
array( 'layout', 'wideSize' ),
),
'background-image' => array(
array( 'background', 'backgroundImage', 'url' ),
),
);
/**
* Protected style properties.
*
* These style properties are only rendered if a setting enables it
* via a value other than `null`.
*
* Each element maps the style property to the corresponding theme.json
* setting key.
*
* @since 5.9.0
*/
const PROTECTED_PROPERTIES = array(
'spacing.blockGap' => array( 'spacing', 'blockGap' ),
);
/**
* The top-level keys a theme.json can have.
*
* @since 5.8.0 As `ALLOWED_TOP_LEVEL_KEYS`.
* @since 5.9.0 Renamed from `ALLOWED_TOP_LEVEL_KEYS` to `VALID_TOP_LEVEL_KEYS`,
* added the `customTemplates` and `templateParts` values.
* @since 6.3.0 Added the `description` value.
* @since 6.6.0 Added `blockTypes` to support block style variation theme.json partials.
* @var string[]
*/
const VALID_TOP_LEVEL_KEYS = array(
'blockTypes',
'customTemplates',
'description',
'patterns',
'settings',
'slug',
'styles',
'templateParts',
'title',
'version',
);
/**
* The valid properties under the settings key.
*
* @since 5.8.0 As `ALLOWED_SETTINGS`.
* @since 5.9.0 Renamed from `ALLOWED_SETTINGS` to `VALID_SETTINGS`,
* added new properties for `border`, `color`, `spacing`,
* and `typography`, and renamed others according to the new schema.
* @since 6.0.0 Added `color.defaultDuotone`.
* @since 6.1.0 Added `layout.definitions` and `useRootPaddingAwareAlignments`.
* @since 6.2.0 Added `dimensions.minHeight`, 'shadow.presets', 'shadow.defaultPresets',
* `position.fixed` and `position.sticky`.
* @since 6.3.0 Added support for `typography.textColumns`, removed `layout.definitions`.
* @since 6.4.0 Added support for `layout.allowEditing`, `background.backgroundImage`,
* `typography.writingMode`, `lightbox.enabled` and `lightbox.allowEditing`.
* @since 6.5.0 Added support for `layout.allowCustomContentAndWideSize`,
* `background.backgroundSize` and `dimensions.aspectRatio`.
* @since 6.6.0 Added support for 'dimensions.aspectRatios', 'dimensions.defaultAspectRatios',
* 'typography.defaultFontSizes', and 'spacing.defaultSpacingSizes'.
* @var array
*/
const VALID_SETTINGS = array(
'appearanceTools' => null,
'useRootPaddingAwareAlignments' => null,
'background' => array(
'backgroundImage' => null,
'backgroundSize' => null,
),
'border' => array(
'color' => null,
'radius' => null,
'style' => null,
'width' => null,
),
'color' => array(
'background' => null,
'custom' => null,
'customDuotone' => null,
'customGradient' => null,
'defaultDuotone' => null,
'defaultGradients' => null,
'defaultPalette' => null,
'duotone' => null,
'gradients' => null,
'link' => null,
'heading' => null,
'button' => null,
'caption' => null,
'palette' => null,
'text' => null,
),
'custom' => null,
'dimensions' => array(
'aspectRatio' => null,
'aspectRatios' => null,
'defaultAspectRatios' => null,
'minHeight' => null,
),
'layout' => array(
'contentSize' => null,
'wideSize' => null,
'allowEditing' => null,
'allowCustomContentAndWideSize' => null,
),
'lightbox' => array(
'enabled' => null,
'allowEditing' => null,
),
'position' => array(
'fixed' => null,
'sticky' => null,
),
'spacing' => array(
'customSpacingSize' => null,
'defaultSpacingSizes' => null,
'spacingSizes' => null,
'spacingScale' => null,
'blockGap' => null,
'margin' => null,
'padding' => null,
'units' => null,
),
'shadow' => array(
'presets' => null,
'defaultPresets' => null,
),
'typography' => array(
'fluid' => null,
'customFontSize' => null,
'defaultFontSizes' => null,
'dropCap' => null,
'fontFamilies' => null,
'fontSizes' => null,
'fontStyle' => null,
'fontWeight' => null,
'letterSpacing' => null,
'lineHeight' => null,
'textAlign' => null,
'textColumns' => null,
'textDecoration' => null,
'textTransform' => null,
'writingMode' => null,
),
);
/*
* The valid properties for fontFamilies under settings key.
*
* @since 6.5.0
*
* @var array
*/
const FONT_FAMILY_SCHEMA = array(
array(
'fontFamily' => null,
'name' => null,
'slug' => null,
'fontFace' => array(
array(
'ascentOverride' => null,
'descentOverride' => null,
'fontDisplay' => null,
'fontFamily' => null,
'fontFeatureSettings' => null,
'fontStyle' => null,
'fontStretch' => null,
'fontVariationSettings' => null,
'fontWeight' => null,
'lineGapOverride' => null,
'sizeAdjust' => null,
'src' => null,
'unicodeRange' => null,
),
),
),
);
/**
* The valid properties under the styles key.
*
* @since 5.8.0 As `ALLOWED_STYLES`.
* @since 5.9.0 Renamed from `ALLOWED_STYLES` to `VALID_STYLES`,
* added new properties for `border`, `filter`, `spacing`,
* and `typography`.
* @since 6.1.0 Added new side properties for `border`,
* added new property `shadow`,
* updated `blockGap` to be allowed at any level.
* @since 6.2.0 Added `outline`, and `minHeight` properties.
* @since 6.3.0 Added support for `typography.textColumns`.
* @since 6.5.0 Added support for `dimensions.aspectRatio`.
* @since 6.6.0 Added `background` sub properties to top-level only.
*
* @var array
*/
const VALID_STYLES = array(
'background' => array(
'backgroundImage' => null,
'backgroundPosition' => null,
'backgroundRepeat' => null,
'backgroundSize' => null,
'backgroundAttachment' => null,
),
'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,
),
'dimensions' => array(
'aspectRatio' => null,
'minHeight' => null,
),
'filter' => array(
'duotone' => null,
),
'outline' => array(
'color' => null,
'offset' => null,
'style' => null,
'width' => null,
),
'shadow' => null,
'spacing' => array(
'margin' => null,
'padding' => null,
'blockGap' => null,
),
'typography' => array(
'fontFamily' => null,
'fontSize' => null,
'fontStyle' => null,
'fontWeight' => null,
'letterSpacing' => null,
'lineHeight' => null,
'textAlign' => null,
'textColumns' => null,
'textDecoration' => null,
'textTransform' => null,
'writingMode' => null,
),
'css' => null,
);
/**
* Defines which pseudo selectors are enabled for which elements.
*
* The order of the selectors should be: link, any-link, visited, hover, focus, active.
* This is to ensure the user action (hover, focus and active) styles have a higher
* specificity than the visited styles, which in turn have a higher specificity than
* the unvisited styles.
*
* See https://core.trac.wordpress.org/ticket/56928.
* Note: this will affect both top-level and block-level elements.
*
* @since 6.1.0
* @since 6.2.0 Added support for ':link' and ':any-link'.
*/
const VALID_ELEMENT_PSEUDO_SELECTORS = array(
'link' => array( ':link', ':any-link', ':visited', ':hover', ':focus', ':active' ),
'button' => array( ':link', ':any-link', ':visited', ':hover', ':focus', ':active' ),
);
/**
* The valid elements that can be found under styles.
*
* @since 5.8.0
* @since 6.1.0 Added `heading`, `button`, and `caption` elements.
* @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',
// We have the .wp-block-button__link class so that this will target older buttons that have been serialized.
'button' => '.wp-element-button, .wp-block-button__link',
// The block classes are necessary to target older content that won't use the new class names.
'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',
'cite' => 'cite',
);
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.
*
* @since 6.1.0
* @var string[]
*/
const BLOCK_SUPPORT_FEATURE_LEVEL_SELECTORS = array(
'__experimentalBorder' => 'border',
'color' => 'color',
'spacing' => 'spacing',
'typography' => 'typography',
);
/**
* Return the input schema at the root and per origin.
*
* @since 6.5.0
*
* @param array $schema The base schema.
* @return array The schema at the root and per origin.
*
* Example:
* schema_in_root_and_per_origin(
* array(
* 'fontFamily' => null,
* 'slug' => null,
* )
* )
*
* Returns:
* array(
* 'fontFamily' => null,
* 'slug' => null,
* 'default' => array(
* 'fontFamily' => null,
* 'slug' => null,
* ),
* 'blocks' => array(
* 'fontFamily' => null,
* 'slug' => null,
* ),
* 'theme' => array(
* 'fontFamily' => null,
* 'slug' => null,
* ),
* 'custom' => array(
* 'fontFamily' => null,
* 'slug' => null,
* ),
* )
*/
protected static function schema_in_root_and_per_origin( $schema ) {
$schema_in_root_and_per_origin = $schema;
foreach ( static::VALID_ORIGINS as $origin ) {
$schema_in_root_and_per_origin[ $origin ] = $schema;
}
return $schema_in_root_and_per_origin;
}
/**
* Returns a class name by an element name.
*
* @since 6.1.0
*
* @param string $element The name of the element.
* @return string The name of the class.
*/
public static function get_element_class_name( $element ) {
$class_name = '';
if ( isset( static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES[ $element ] ) ) {
$class_name = static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES[ $element ];
}
return $class_name;
}
/**
* Options that settings.appearanceTools enables.
*
* @since 6.0.0
* @since 6.2.0 Added `dimensions.minHeight` and `position.sticky`.
* @since 6.4.0 Added `background.backgroundImage`.
* @since 6.5.0 Added `background.backgroundSize` and `dimensions.aspectRatio`.
* @var array
*/
const APPEARANCE_TOOLS_OPT_INS = array(
array( 'background', 'backgroundImage' ),
array( 'background', 'backgroundSize' ),
array( 'border', 'color' ),
array( 'border', 'radius' ),
array( 'border', 'style' ),
array( 'border', 'width' ),
array( 'color', 'link' ),
array( 'color', 'heading' ),
array( 'color', 'button' ),
array( 'color', 'caption' ),
array( 'dimensions', 'aspectRatio' ),
array( 'dimensions', 'minHeight' ),
array( 'position', 'sticky' ),
array( 'spacing', 'blockGap' ),
array( 'spacing', 'margin' ),
array( 'spacing', 'padding' ),
array( 'typography', 'lineHeight' ),
);
/**
* The latest version of the schema in use.
*
* @since 5.8.0
* @since 5.9.0 Changed value from 1 to 2.
* @since 6.6.0 Changed value from 2 to 3.
* @var int
*/
const LATEST_SCHEMA = 3;
/**
* Constructor.
*
* @since 5.8.0
* @since 6.6.0 Key spacingScale by origin, and Pre-generate the spacingSizes from spacingScale.
* Added unwrapping of shared block style variations into block type variations if registered.
*
* @param array $theme_json A structure that follows the theme.json schema.
* @param string $origin Optional. What source of data this object represents.
* One of 'blocks', 'default', 'theme', or 'custom'. Default 'theme'.
*/
public function __construct( $theme_json = array( 'version' => self::LATEST_SCHEMA ), $origin = 'theme' ) {
if ( ! in_array( $origin, static::VALID_ORIGINS, true ) ) {
$origin = 'theme';
}
$this->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();
$this->theme_json = static::unwrap_shared_block_style_variations( $this->theme_json, $valid_variations );
$this->theme_json = static::sanitize( $this->theme_json, $valid_block_names, $valid_element_names, $valid_variations );
$this->theme_json = static::maybe_opt_in_into_settings( $this->theme_json );
// Internally, presets are keyed by origin.
$nodes = static::get_setting_nodes( $this->theme_json );
foreach ( $nodes as $node ) {
foreach ( static::PRESETS_METADATA as $preset_metadata ) {
$path = $node['path'];
foreach ( $preset_metadata['path'] as $subpath ) {
$path[] = $subpath;
}
$preset = _wp_array_get( $this->theme_json, $path, null );
if ( null !== $preset ) {
// If the preset is not already keyed by origin.
if ( isset( $preset[0] ) || empty( $preset ) ) {
_wp_array_set( $this->theme_json, $path, array( $origin => $preset ) );
}
}
}
}
// In addition to presets, spacingScale (which generates presets) is also keyed by origin.
$scale_path = array( 'settings', 'spacing', 'spacingScale' );
$spacing_scale = _wp_array_get( $this->theme_json, $scale_path, null );
if ( null !== $spacing_scale ) {
// If the spacingScale is not already keyed by origin.
if ( empty( array_intersect( array_keys( $spacing_scale ), static::VALID_ORIGINS ) ) ) {
_wp_array_set( $this->theme_json, $scale_path, array( $origin => $spacing_scale ) );
}
}
// Pre-generate the spacingSizes from spacingScale.
$scale_path = array( 'settings', 'spacing', 'spacingScale', $origin );
$spacing_scale = _wp_array_get( $this->theme_json, $scale_path, null );
if ( isset( $spacing_scale ) ) {
$sizes_path = array( 'settings', 'spacing', 'spacingSizes', $origin );
$spacing_sizes = _wp_array_get( $this->theme_json, $sizes_path, array() );
$spacing_scale_sizes = static::compute_spacing_sizes( $spacing_scale );
$merged_spacing_sizes = static::merge_spacing_sizes( $spacing_scale_sizes, $spacing_sizes );
_wp_array_set( $this->theme_json, $sizes_path, $merged_spacing_sizes );
}
}
/**
* Unwraps shared block style variations.
*
* It takes the shared variations (styles.variations.variationName) and
* applies them to all the blocks that have the given variation registered
* (styles.blocks.blockType.variations.variationName).
*
* For example, given the `core/paragraph` and `core/group` blocks have
* registered the `section-a` style variation, and given the following input:
*
* {
* "styles": {
* "variations": {
* "section-a": { "color": { "background": "backgroundColor" } }
* }
* }
* }
*
* It returns the following output:
*
* {
* "styles": {
* "blocks": {
* "core/paragraph": {
* "variations": {
* "section-a": { "color": { "background": "backgroundColor" } }
* },
* },
* "core/group": {
* "variations": {
* "section-a": { "color": { "background": "backgroundColor" } }
* }
* }
* }
* }
* }
*
* @since 6.6.0
*
* @param array $theme_json A structure that follows the theme.json schema.
* @param array $valid_variations Valid block style variations.
* @return array Theme json data with shared variation definitions unwrapped under appropriate block types.
*/
private static function unwrap_shared_block_style_variations( $theme_json, $valid_variations ) {
if ( empty( $theme_json['styles']['variations'] ) || empty( $valid_variations ) ) {
return $theme_json;
}
$new_theme_json = $theme_json;
$variations = $new_theme_json['styles']['variations'];
foreach ( $valid_variations as $block_type => $registered_variations ) {
foreach ( $registered_variations as $variation_name ) {
$block_level_data = $new_theme_json['styles']['blocks'][ $block_type ]['variations'][ $variation_name ] ?? array();
$top_level_data = $variations[ $variation_name ] ?? array();
$merged_data = array_replace_recursive( $top_level_data, $block_level_data );
if ( ! empty( $merged_data ) ) {
_wp_array_set( $new_theme_json, array( 'styles', 'blocks', $block_type, 'variations', $variation_name ), $merged_data );
}
}
}
unset( $new_theme_json['styles']['variations'] );
return $new_theme_json;
}
/**
* Enables some opt-in settings if theme declared support.
*
* @since 5.9.0
*
* @param array $theme_json A theme.json structure to modify.
* @return array The modified theme.json structure.
*/
protected static function maybe_opt_in_into_settings( $theme_json ) {
$new_theme_json = $theme_json;
if (
isset( $new_theme_json['settings']['appearanceTools'] ) &&
true === $new_theme_json['settings']['appearanceTools']
) {
static::do_opt_in_into_settings( $new_theme_json['settings'] );
}
if ( isset( $new_theme_json['settings']['blocks'] ) && is_array( $new_theme_json['settings']['blocks'] ) ) {
foreach ( $new_theme_json['settings']['blocks'] as &$block ) {
if ( isset( $block['appearanceTools'] ) && ( true === $block['appearanceTools'] ) ) {
static::do_opt_in_into_settings( $block );
}
}
}
return $new_theme_json;
}
/**
* Enables some settings.
*
* @since 5.9.0
*
* @param array $context The context to which the settings belong.
*/
protected static function do_opt_in_into_settings( &$context ) {
foreach ( static::APPEARANCE_TOOLS_OPT_INS as $path ) {
/*
* Use "unset prop" as a marker instead of "null" because
* "null" can be a valid value for some props (e.g. blockGap).
*/
if ( 'unset prop' === _wp_array_get( $context, $path, 'unset prop' ) ) {
_wp_array_set( $context, $path, true );
}
}
unset( $context['appearanceTools'] );
}
/**
* Sanitizes the input according to the schemas.
*
* @since 5.8.0
* @since 5.9.0 Added the `$valid_block_names` and `$valid_element_name` parameters.
* @since 6.3.0 Added the `$valid_variations` parameter.
* @since 6.6.0 Updated schema to allow extended block style variations.
*
* @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.
* @param array $valid_variations List of valid variations per block.
* @return array The sanitized output.
*/
protected static function sanitize( $input, $valid_block_names, $valid_element_names, $valid_variations ) {
$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 ) {
// array_key_exists() needs to be used instead of isset() because the value can be null.
if ( array_key_exists( $section, $styles_non_top_level ) && is_array( $styles_non_top_level[ $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 ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] ) ) {
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();
/*
* Generate a schema for blocks.
* - Block styles can contain `elements` & `variations` definitions.
* - Variations definitions cannot be nested.
* - Variations can contain styles for inner `blocks`.
* - Variation inner `blocks` styles can contain `elements`.
*
* As each variation needs a `blocks` schema but further nested
* inner `blocks`, the overall schema will be generated in multiple passes.