407 lines
12 KiB
PHP
407 lines
12 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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* This class is for internal core usage and is not supposed to be used by extenders (plugins and/or themes).
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* This is a low-level API that may need to do breaking changes. Please,
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* use get_global_settings, get_global_styles, and get_global_stylesheet instead.
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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 for data coming from the user.
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*
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* @since 5.9.0
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* @var WP_Theme_JSON
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*/
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private static $user = null;
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/**
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* Stores the ID of the custom post type
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* that holds the user data.
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*
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* @since 5.9.0
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* @var integer
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*/
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private static $user_custom_post_type_id = 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 5.8.0
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* @since 5.9.0 Renamed from $theme_json_i18n
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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 will be backfilled from existing
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* theme supports, if any. Note that if the same data
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* is present in theme.json and in theme supports,
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* the theme.json takes precendence.
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*
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* @since 5.8.0
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* @since 5.9.0 Theme supports have been inlined and the argument removed.
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*
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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( $deprecated = array() ) {
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if ( ! empty( $deprecated ) ) {
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_deprecated_argument( __METHOD__, '5.9' );
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}
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if ( null === self::$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( $theme_json_data );
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if ( wp_get_theme()->parent() ) {
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// Get parent theme.json.
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$parent_theme_json_data = self::read_json_file( self::get_file_path_from_theme( 'theme.json', true ) );
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$parent_theme_json_data = self::translate( $parent_theme_json_data, wp_get_theme()->parent()->get( 'TextDomain' ) );
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$parent_theme = new WP_Theme_JSON( $parent_theme_json_data );
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// Merge the child theme.json into the parent theme.json.
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// The child theme takes precedence over the parent.
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$parent_theme->merge( self::$theme );
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self::$theme = $parent_theme;
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}
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}
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/*
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* We want the presets and settings declared in theme.json
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* to override the ones declared via theme supports.
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* So we take theme supports, transform it to theme.json shape
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* and merge the self::$theme upon that.
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*/
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$theme_support_data = WP_Theme_JSON::get_from_editor_settings( get_default_block_editor_settings() );
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$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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* Returns the CPT that contains the user's origin config
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* for the current theme or a void array if none found.
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*
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* It can also create and return a new draft CPT.
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*
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* @since 5.9.0
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*
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* @param bool $should_create_cpt Optional. Whether a new CPT should be created if no one was found.
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* False by default.
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* @param array $post_status_filter Filter Optional. CPT by post status.
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* ['publish'] by default, so it only fetches published posts.
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*
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* @return array Custom Post Type for the user's origin config.
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*/
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private static function get_user_data_from_custom_post_type( $should_create_cpt = false, $post_status_filter = array( 'publish' ) ) {
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$user_cpt = array();
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$post_type_filter = 'wp_global_styles';
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$query = new WP_Query(
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array(
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'posts_per_page' => 1,
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'orderby' => 'date',
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'order' => 'desc',
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'post_type' => $post_type_filter,
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'post_status' => $post_status_filter,
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'tax_query' => array(
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array(
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'taxonomy' => 'wp_theme',
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'field' => 'name',
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'terms' => wp_get_theme()->get_stylesheet(),
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),
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),
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)
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);
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if ( is_array( $query->posts ) && ( 1 === $query->post_count ) ) {
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$user_cpt = $query->posts[0]->to_array();
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} elseif ( $should_create_cpt ) {
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$cpt_post_id = wp_insert_post(
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array(
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'post_content' => '{"version": ' . WP_Theme_JSON::LATEST_SCHEMA . ', "isGlobalStylesUserThemeJSON": true }',
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'post_status' => 'publish',
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'post_title' => __( 'Custom Styles', 'default' ),
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'post_type' => $post_type_filter,
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'post_name' => 'wp-global-styles-' . urlencode( wp_get_theme()->get_stylesheet() ),
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'tax_input' => array(
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'wp_theme' => array( wp_get_theme()->get_stylesheet() ),
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),
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),
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true
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);
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if ( is_wp_error( $cpt_post_id ) ) {
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$user_cpt = array();
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} else {
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$user_cpt = get_post( $cpt_post_id, ARRAY_A );
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}
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}
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return $user_cpt;
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}
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/**
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* Returns the user's origin config.
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*
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* @since 5.9.0
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*
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* @return WP_Theme_JSON Entity that holds user data.
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*/
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public static function get_user_data() {
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if ( null !== self::$user ) {
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return self::$user;
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}
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$config = array();
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$user_cpt = self::get_user_data_from_custom_post_type();
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if ( array_key_exists( 'post_content', $user_cpt ) ) {
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$decoded_data = json_decode( $user_cpt['post_content'], true );
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$json_decoding_error = json_last_error();
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if ( JSON_ERROR_NONE !== $json_decoding_error ) {
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trigger_error( 'Error when decoding a theme.json schema for user data. ' . json_last_error_msg() );
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return new WP_Theme_JSON( $config, 'user' );
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}
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// Very important to verify if the flag isGlobalStylesUserThemeJSON is true.
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// If is not true the content was not escaped and is not safe.
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if (
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is_array( $decoded_data ) &&
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isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) &&
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$decoded_data['isGlobalStylesUserThemeJSON']
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) {
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unset( $decoded_data['isGlobalStylesUserThemeJSON'] );
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$config = $decoded_data;
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}
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}
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self::$user = new WP_Theme_JSON( $config, 'user' );
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return self::$user;
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}
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/**
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* There are three sources of data (origins) for a site:
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* core, theme, and user. The user's has higher priority
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* than the theme's, and the theme's higher than core's.
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*
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* Unlike the getters {@link get_core_data},
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* {@link get_theme_data}, and {@link get_user_data},
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* this method returns data after it has been merged
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* with the previous origins. This means that if the same piece of data
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* is declared in different origins (user, theme, and core),
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* the last origin overrides the previous.
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*
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* For example, if the user has set a background color
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* for the paragraph block, and the theme has done it as well,
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* the user preference wins.
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*
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* @since 5.8.0
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* @since 5.9.0 Add user data and change the arguments.
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*
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* @param string $origin Optional. To what level should we merge data.
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* Valid values are 'theme' or 'user'.
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* Default is 'user'.
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* @return WP_Theme_JSON
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*/
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public static function get_merged_data( $origin = 'user' ) {
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if ( is_array( $origin ) ) {
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_deprecated_argument( __FUNCTION__, '5.9' );
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}
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$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() );
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if ( 'user' === $origin ) {
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$result->merge( self::get_user_data() );
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}
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return $result;
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}
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/**
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* Returns the ID of the custom post type
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* that stores user data.
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*
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* @since 5.9.0
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*
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* @return integer|null
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*/
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public static function get_user_custom_post_type_id() {
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if ( null !== self::$user_custom_post_type_id ) {
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return self::$user_custom_post_type_id;
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}
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$user_cpt = self::get_user_data_from_custom_post_type( true );
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if ( array_key_exists( 'ID', $user_cpt ) ) {
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self::$user_custom_post_type_id = $user_cpt['ID'];
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}
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return self::$user_custom_post_type_id;
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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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* @since 5.9.0 Also check in the parent theme.
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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 = is_readable( get_theme_file_path( '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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* @since 5.9.0 Adapt to work with child themes.
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*
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* @param string $file_name Name of the file.
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* @param bool $template Optional. Use template theme directory. Default false.
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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, $template = false ) {
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$path = $template ? get_template_directory() : get_stylesheet_directory();
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$candidate = $path . '/' . $file_name;
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return is_readable( $candidate ) ? $candidate : '';
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}
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/**
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* Cleans the cached data so it can be recalculated.
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*
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* @since 5.8.0
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* @since 5.9.0 Added new variables to reset.
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*/
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public static function clean_cached_data() {
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self::$core = null;
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self::$theme = null;
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self::$user = null;
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self::$user_custom_post_type_id = null;
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self::$theme_has_support = null;
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self::$i18n_schema = null;
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}
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}
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