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