237 lines
6.5 KiB
PHP
237 lines
6.5 KiB
PHP
<?php
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/**
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* WP_Theme_JSON_Resolver class
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*
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* @package WordPress
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* @subpackage Theme
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* @since 5.8.0
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*/
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/**
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* Class that abstracts the processing of the different data sources
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* for site-level config and offers an API to work with them.
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*
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* @access private
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*/
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class WP_Theme_JSON_Resolver {
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/**
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* Container for data coming from core.
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*
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* @since 5.8.0
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* @var WP_Theme_JSON
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*/
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private static $core = null;
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/**
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* Container for data coming from the theme.
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*
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* @since 5.8.0
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* @var WP_Theme_JSON
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*/
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private static $theme = null;
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/**
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* Whether or not the theme supports theme.json.
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*
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* @since 5.8.0
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* @var bool
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*/
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private static $theme_has_support = null;
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/**
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* Container to keep loaded i18n schema for `theme.json`.
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*
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* @since 5.9.0
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* @var array
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*/
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private static $i18n_schema = null;
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/**
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* Processes a file that adheres to the theme.json schema
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* and returns an array with its contents, or a void array if none found.
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*
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* @since 5.8.0
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*
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* @param string $file_path Path to file. Empty if no file.
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* @return array Contents that adhere to the theme.json schema.
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*/
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private static function read_json_file( $file_path ) {
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$config = array();
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if ( $file_path ) {
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$decoded_file = wp_json_file_decode( $file_path, array( 'associative' => true ) );
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if ( is_array( $decoded_file ) ) {
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$config = $decoded_file;
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}
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}
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return $config;
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}
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/**
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* Returns a data structure used in theme.json translation.
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*
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* @since 5.8.0
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* @deprecated 5.9.0
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*
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* @return array An array of theme.json fields that are translatable and the keys that are translatable.
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*/
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public static function get_fields_to_translate() {
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_deprecated_function( __METHOD__, '5.9.0' );
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return array();
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}
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/**
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* Given a theme.json structure modifies it in place to update certain values
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* by its translated strings according to the language set by the user.
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*
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* @since 5.8.0
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*
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* @param array $theme_json The theme.json to translate.
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* @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
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* Default 'default'.
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* @return array Returns the modified $theme_json_structure.
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*/
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private static function translate( $theme_json, $domain = 'default' ) {
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if ( null === self::$i18n_schema ) {
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$i18n_schema = wp_json_file_decode( __DIR__ . '/theme-i18n.json' );
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self::$i18n_schema = null === $i18n_schema ? array() : $i18n_schema;
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}
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return translate_settings_using_i18n_schema( self::$i18n_schema, $theme_json, $domain );
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}
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/**
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* Return core's origin config.
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*
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* @since 5.8.0
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*
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* @return WP_Theme_JSON Entity that holds core data.
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*/
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public static function get_core_data() {
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if ( null !== self::$core ) {
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return self::$core;
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}
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$config = self::read_json_file( __DIR__ . '/theme.json' );
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$config = self::translate( $config );
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self::$core = new WP_Theme_JSON( $config, 'core' );
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return self::$core;
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}
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/**
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* Returns the theme's data.
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*
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* Data from theme.json can be augmented via the $theme_support_data variable.
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* This is useful, for example, to backfill the gaps in theme.json that a theme
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* has declared via add_theme_supports.
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*
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* Note that if the same data is present in theme.json and in $theme_support_data,
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* the theme.json's is not overwritten.
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*
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* @since 5.8.0
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*
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* @param array $theme_support_data Optional. Theme support data in theme.json format.
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* Default empty array.
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* @return WP_Theme_JSON Entity that holds theme data.
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*/
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public static function get_theme_data( $theme_support_data = array() ) {
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if ( null === self::$theme ) {
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$theme_json_data = self::read_json_file( self::get_file_path_from_theme( 'theme.json' ) );
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$theme_json_data = self::translate( $theme_json_data, wp_get_theme()->get( 'TextDomain' ) );
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self::$theme = new WP_Theme_JSON( $theme_json_data );
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}
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if ( empty( $theme_support_data ) ) {
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return self::$theme;
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}
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/*
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* We want the presets and settings declared in theme.json
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* to override the ones declared via add_theme_support.
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*/
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$with_theme_supports = new WP_Theme_JSON( $theme_support_data );
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$with_theme_supports->merge( self::$theme );
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return $with_theme_supports;
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}
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/**
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* There are different sources of data for a site: core and theme.
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*
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* While the getters {@link get_core_data}, {@link get_theme_data} return the raw data
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* from the respective origins, this method merges them all together.
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*
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* If the same piece of data is declared in different origins (core and theme),
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* the last origin overrides the previous. For example, if core disables custom colors
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* but a theme enables them, the theme config wins.
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*
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* @since 5.8.0
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*
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* @param array $settings Optional. Existing block editor settings. Default empty array.
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* @return WP_Theme_JSON
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*/
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public static function get_merged_data( $settings = array() ) {
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$theme_support_data = WP_Theme_JSON::get_from_editor_settings( $settings );
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$result = new WP_Theme_JSON();
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$result->merge( self::get_core_data() );
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$result->merge( self::get_theme_data( $theme_support_data ) );
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return $result;
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}
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/**
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* Whether the current theme has a theme.json file.
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*
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* @since 5.8.0
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*
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* @return bool
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*/
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public static function theme_has_support() {
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if ( ! isset( self::$theme_has_support ) ) {
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self::$theme_has_support = (bool) self::get_file_path_from_theme( 'theme.json' );
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}
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return self::$theme_has_support;
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}
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/**
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* Builds the path to the given file and checks that it is readable.
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*
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* If it isn't, returns an empty string, otherwise returns the whole file path.
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*
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* @since 5.8.0
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*
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* @param string $file_name Name of the file.
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* @return string The whole file path or empty if the file doesn't exist.
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*/
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private static function get_file_path_from_theme( $file_name ) {
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/*
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* This used to be a locate_template call. However, that method proved problematic
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* due to its use of constants (STYLESHEETPATH) that threw errors in some scenarios.
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*
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* When the theme.json merge algorithm properly supports child themes,
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* this should also fall back to the template path, as locate_template did.
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*/
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$located = '';
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$candidate = get_stylesheet_directory() . '/' . $file_name;
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if ( is_readable( $candidate ) ) {
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$located = $candidate;
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}
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return $located;
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}
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/**
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* Cleans the cached data so it can be recalculated.
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*
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* @since 5.8.0
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*/
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public static function clean_cached_data() {
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self::$core = null;
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self::$theme = null;
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self::$theme_has_support = null;
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}
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}
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