WordPress/wp-includes/class-wp-theme-json.php

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<?php
/**
* Process of structures that adhere to the theme.json schema.
*
* @package WordPress
*/
/**
* Class that encapsulates the processing of
* structures that adhere to the theme.json spec.
*
* @access private
*/
class WP_Theme_JSON {
/**
* Container of data in theme.json format.
*
* @var array
*/
private $theme_json = null;
/**
* Holds the allowed block names extracted from block.json.
* Shared among all instances so we only process it once.
*
* @var array
*/
private static $allowed_block_names = null;
const ALLOWED_TOP_LEVEL_KEYS = array(
'version',
'settings',
);
const ALLOWED_SETTINGS = array(
'color' => array(
'custom' => null,
'customGradient' => null,
'duotone' => null,
'gradients' => null,
'link' => null,
'palette' => null,
),
'custom' => null,
'layout' => null,
'spacing' => array(
'customMargin' => null,
'customPadding' => null,
'units' => null,
),
'typography' => array(
'customFontSize' => null,
'customLineHeight' => null,
'dropCap' => null,
'fontSizes' => null,
),
);
const LATEST_SCHEMA = 1;
/**
* Constructor.
*
* @param array $theme_json A structure that follows the theme.json schema.
*/
public function __construct( $theme_json = array() ) {
if ( ! isset( $theme_json['version'] ) || self::LATEST_SCHEMA !== $theme_json['version'] ) {
$this->theme_json = array();
return;
}
$this->theme_json = self::sanitize( $theme_json );
}
/**
* Returns the allowed block names.
*
* @return array
*/
private static function get_allowed_block_names() {
if ( null !== self::$allowed_block_names ) {
return self::$allowed_block_names;
}
self::$allowed_block_names = array_keys( WP_Block_Type_Registry::get_instance()->get_all_registered() );
return self::$allowed_block_names;
}
/**
* Sanitizes the input according to the schemas.
*
* @param array $input Structure to sanitize.
*
* @return array The sanitized output.
*/
private static function sanitize( $input ) {
$output = array();
if ( ! is_array( $input ) ) {
return $output;
}
$allowed_blocks = self::get_allowed_block_names();
$output = array_intersect_key( $input, array_flip( self::ALLOWED_TOP_LEVEL_KEYS ) );
// Build the schema.
$schema = array();
$schema_settings_blocks = array();
foreach ( $allowed_blocks as $block ) {
$schema_settings_blocks[ $block ] = self::ALLOWED_SETTINGS;
}
$schema['settings'] = self::ALLOWED_SETTINGS;
$schema['settings']['blocks'] = $schema_settings_blocks;
// Remove anything that's not present in the schema.
foreach ( array( 'settings' ) as $subtree ) {
if ( ! isset( $input[ $subtree ] ) ) {
continue;
}
if ( ! is_array( $input[ $subtree ] ) ) {
unset( $output[ $subtree ] );
continue;
}
$result = self::remove_keys_not_in_schema( $input[ $subtree ], $schema[ $subtree ] );
if ( empty( $result ) ) {
unset( $output[ $subtree ] );
} else {
$output[ $subtree ] = $result;
}
}
return $output;
}
/**
* Given a tree, removes the keys that are not present in the schema.
*
* It is recursive and modifies the input in-place.
*
* @param array $tree Input to process.
* @param array $schema Schema to adhere to.
*
* @return array Returns the modified $tree.
*/
private static function remove_keys_not_in_schema( $tree, $schema ) {
$tree = array_intersect_key( $tree, $schema );
foreach ( $schema as $key => $data ) {
if ( ! isset( $tree[ $key ] ) ) {
continue;
}
if ( is_array( $schema[ $key ] ) && is_array( $tree[ $key ] ) ) {
$tree[ $key ] = self::remove_keys_not_in_schema( $tree[ $key ], $schema[ $key ] );
if ( empty( $tree[ $key ] ) ) {
unset( $tree[ $key ] );
}
} elseif ( is_array( $schema[ $key ] ) && ! is_array( $tree[ $key ] ) ) {
unset( $tree[ $key ] );
}
}
return $tree;
}
/**
* Returns the existing settings for each block.
*
* Example:
*
* {
* 'root': {
* 'color': {
* 'custom': true
* }
* },
* 'core/paragraph': {
* 'spacing': {
* 'customPadding': true
* }
* }
* }
*
* @return array Settings per block.
*/
public function get_settings() {
if ( ! isset( $this->theme_json['settings'] ) ) {
return array();
} else {
return $this->theme_json['settings'];
}
}
/**
* Builds metadata for the setting nodes, which returns in the form of:
*
* [
* [
* 'path' => ['path', 'to', 'some', 'node' ]
* ],
* [
* 'path' => [ 'path', 'to', 'other', 'node' ]
* ],
* ]
*
* @param array $theme_json The tree to extract setting nodes from.
*
* @return array
*/
private static function get_setting_nodes( $theme_json ) {
$nodes = array();
if ( ! isset( $theme_json['settings'] ) ) {
return $nodes;
}
// Top-level.
$nodes[] = array(
'path' => array( 'settings' ),
);
// Calculate paths for blocks.
if ( ! isset( $theme_json['settings']['blocks'] ) ) {
return $nodes;
}
foreach ( $theme_json['settings']['blocks'] as $name => $node ) {
$nodes[] = array(
'path' => array( 'settings', 'blocks', $name ),
);
}
return $nodes;
}
/**
* Merge new incoming data.
*
* @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 );
// The array_replace_recursive algorithm merges at the leaf level.
// For leaf values that are arrays it will use the numeric indexes for replacement.
// In those cases, what we want is to use the incoming value, if it exists.
//
// These are the cases that have array values at the leaf levels.
$properties = array();
$properties[] = array( 'color', 'palette' );
$properties[] = array( 'color', 'gradients' );
$properties[] = array( 'custom' );
$properties[] = array( 'spacing', 'units' );
$properties[] = array( 'typography', 'fontSizes' );
$properties[] = array( 'typography', 'fontFamilies' );
$nodes = self::get_setting_nodes( $this->theme_json );
foreach ( $nodes as $metadata ) {
foreach ( $properties as $property_path ) {
$path = array_merge( $metadata['path'], $property_path );
$node = _wp_array_get( $incoming_data, $path, array() );
if ( ! empty( $node ) ) {
_wp_array_set( $this->theme_json, $path, $node );
}
}
}
}
/**
* Returns the raw data.
*
* @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.
*
* @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' => self::LATEST_SCHEMA,
'settings' => array(),
);
// Deprecated theme supports.
if ( isset( $settings['disableCustomColors'] ) ) {
if ( ! isset( $theme_settings['settings']['color'] ) ) {
$theme_settings['settings']['color'] = array();
}
$theme_settings['settings']['color']['custom'] = ! $settings['disableCustomColors'];
}
if ( isset( $settings['disableCustomGradients'] ) ) {
if ( ! isset( $theme_settings['settings']['color'] ) ) {
$theme_settings['settings']['color'] = array();
}
$theme_settings['settings']['color']['customGradient'] = ! $settings['disableCustomGradients'];
}
if ( isset( $settings['disableCustomFontSizes'] ) ) {
if ( ! isset( $theme_settings['settings']['typography'] ) ) {
$theme_settings['settings']['typography'] = array();
}
$theme_settings['settings']['typography']['customFontSize'] = ! $settings['disableCustomFontSizes'];
}
if ( isset( $settings['enableCustomLineHeight'] ) ) {
if ( ! isset( $theme_settings['settings']['typography'] ) ) {
$theme_settings['settings']['typography'] = array();
}
$theme_settings['settings']['typography']['customLineHeight'] = $settings['enableCustomLineHeight'];
}
if ( isset( $settings['enableCustomUnits'] ) ) {
if ( ! isset( $theme_settings['settings']['spacing'] ) ) {
$theme_settings['settings']['spacing'] = array();
}
$theme_settings['settings']['spacing']['units'] = ( true === $settings['enableCustomUnits'] ) ?
array( 'px', 'em', 'rem', 'vh', 'vw' ) :
$settings['enableCustomUnits'];
}
if ( isset( $settings['colors'] ) ) {
if ( ! isset( $theme_settings['settings']['color'] ) ) {
$theme_settings['settings']['color'] = array();
}
$theme_settings['settings']['color']['palette'] = $settings['colors'];
}
if ( isset( $settings['gradients'] ) ) {
if ( ! isset( $theme_settings['settings']['color'] ) ) {
$theme_settings['settings']['color'] = array();
}
$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';
}
}
if ( ! isset( $theme_settings['settings']['typography'] ) ) {
$theme_settings['settings']['typography'] = array();
}
$theme_settings['settings']['typography']['fontSizes'] = $font_sizes;
}
// This allows to make the plugin work with WordPress 5.7 beta
// as well as lower versions. The second check can be removed
// as soon as the minimum WordPress version for the plugin
// is bumped to 5.7.
if ( isset( $settings['enableCustomSpacing'] ) ) {
if ( ! isset( $theme_settings['settings']['spacing'] ) ) {
$theme_settings['settings']['spacing'] = array();
}
$theme_settings['settings']['spacing']['customPadding'] = $settings['enableCustomSpacing'];
}
// Things that didn't land in core yet, so didn't have a setting assigned.
if ( current( (array) get_theme_support( 'experimental-link-color' ) ) ) {
if ( ! isset( $theme_settings['settings']['color'] ) ) {
$theme_settings['settings']['color'] = array();
}
$theme_settings['settings']['color']['link'] = true;
}
return $theme_settings;
}
}