453 lines
14 KiB
PHP
453 lines
14 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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protected 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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protected 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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protected 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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protected 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 int
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*/
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protected static $user_custom_post_type_id = null;
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/**
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* Container to keep loaded i18n schema for `theme.json`.
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*
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* @since 5.8.0 As `$theme_json_i18n`.
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* @since 5.9.0 Renamed from `$theme_json_i18n` to `$i18n_schema`.
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* @var array
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*/
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protected 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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protected 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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protected static function translate( $theme_json, $domain = 'default' ) {
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if ( null === static::$i18n_schema ) {
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$i18n_schema = wp_json_file_decode( __DIR__ . '/theme-i18n.json' );
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static::$i18n_schema = null === $i18n_schema ? array() : $i18n_schema;
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}
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return translate_settings_using_i18n_schema( static::$i18n_schema, $theme_json, $domain );
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}
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/**
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* Return core's origin config.
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*
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* @since 5.8.0
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*
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* @return WP_Theme_JSON Entity that holds core data.
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*/
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public static function get_core_data() {
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if ( null !== static::$core ) {
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return static::$core;
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}
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$config = static::read_json_file( __DIR__ . '/theme.json' );
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$config = static::translate( $config );
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static::$core = new WP_Theme_JSON( $config, 'default' );
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return static::$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 `$theme_support_data` argument removed.
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*
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* @param array $deprecated Deprecated. Not used.
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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( $deprecated ) ) {
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_deprecated_argument( __METHOD__, '5.9.0' );
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}
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if ( null === static::$theme ) {
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$theme_json_data = static::read_json_file( static::get_file_path_from_theme( 'theme.json' ) );
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$theme_json_data = static::translate( $theme_json_data, wp_get_theme()->get( 'TextDomain' ) );
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static::$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 = static::read_json_file( static::get_file_path_from_theme( 'theme.json', true ) );
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$parent_theme_json_data = static::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( static::$theme );
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static::$theme = $parent_theme;
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}
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}
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/*
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* We want the presets and settings declared in theme.json
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* to override the ones declared via theme supports.
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* So we take theme supports, transform it to theme.json shape
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* and merge the static::$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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if ( ! static::theme_has_support() ) {
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if ( ! isset( $theme_support_data['settings']['color'] ) ) {
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$theme_support_data['settings']['color'] = array();
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}
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$default_palette = false;
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if ( current_theme_supports( 'default-color-palette' ) ) {
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$default_palette = true;
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}
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if ( ! isset( $theme_support_data['settings']['color']['palette'] ) ) {
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// If the theme does not have any palette, we still want to show the core one.
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$default_palette = true;
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}
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$theme_support_data['settings']['color']['defaultPalette'] = $default_palette;
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$default_gradients = false;
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if ( current_theme_supports( 'default-gradient-presets' ) ) {
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$default_gradients = true;
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}
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if ( ! isset( $theme_support_data['settings']['color']['gradients'] ) ) {
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// If the theme does not have any gradients, we still want to show the core ones.
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$default_gradients = true;
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}
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$theme_support_data['settings']['color']['defaultGradients'] = $default_gradients;
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}
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$with_theme_supports = new WP_Theme_JSON( $theme_support_data );
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$with_theme_supports->merge( static::$theme );
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return $with_theme_supports;
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}
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/**
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* Returns the custom post type that contains the user's origin config
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* for the current theme or a void array if none are found.
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*
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* This can also create and return a new draft custom post type.
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*
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* @since 5.9.0
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*
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* @param WP_Theme $theme The theme object. If empty, it
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* defaults to the current theme.
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* @param bool $create_post Optional. Whether a new custom post
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* type should be created if none are
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* found. Default false.
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* @param array $post_status_filter Optional. Filter custom post type by
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* post status. Default `array( 'publish' )`,
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* so it only fetches published posts.
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* @return array Custom Post Type for the user's origin config.
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*/
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public static function get_user_data_from_wp_global_styles( $theme, $create_post = false, $post_status_filter = array( 'publish' ) ) {
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if ( ! $theme instanceof WP_Theme ) {
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$theme = wp_get_theme();
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}
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$user_cpt = array();
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$post_type_filter = 'wp_global_styles';
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$args = array(
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'numberposts' => 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' => $theme->get_stylesheet(),
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),
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),
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);
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$cache_key = sprintf( 'wp_global_styles_%s', md5( serialize( $args ) ) );
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$post_id = wp_cache_get( $cache_key );
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if ( (int) $post_id > 0 ) {
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return get_post( $post_id, ARRAY_A );
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}
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// Special case: '-1' is a results not found.
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if ( -1 === $post_id && ! $create_post ) {
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return $user_cpt;
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}
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$recent_posts = wp_get_recent_posts( $args );
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if ( is_array( $recent_posts ) && ( count( $recent_posts ) === 1 ) ) {
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$user_cpt = $recent_posts[0];
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} elseif ( $create_post ) {
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$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',
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'post_type' => $post_type_filter,
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'post_name' => 'wp-global-styles-' . urlencode( wp_get_theme()->get_stylesheet() ),
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'tax_input' => array(
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'wp_theme' => array( wp_get_theme()->get_stylesheet() ),
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),
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),
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true
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);
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$user_cpt = get_post( $cpt_post_id, ARRAY_A );
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}
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$cache_expiration = $user_cpt ? DAY_IN_SECONDS : HOUR_IN_SECONDS;
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wp_cache_set( $cache_key, $user_cpt ? $user_cpt['ID'] : -1, '', $cache_expiration );
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return $user_cpt;
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}
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/**
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* Returns the user's origin config.
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*
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* @since 5.9.0
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*
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* @return WP_Theme_JSON Entity that holds styles for user data.
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*/
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public static function get_user_data() {
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if ( null !== static::$user ) {
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return static::$user;
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}
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$config = array();
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$user_cpt = static::get_user_data_from_wp_global_styles( wp_get_theme() );
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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, 'custom' );
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}
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// Very important to verify that the flag isGlobalStylesUserThemeJSON is true.
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// If it's not true then 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 = $decoded_data;
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}
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}
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static::$user = new WP_Theme_JSON( $config, 'custom' );
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return static::$user;
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}
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/**
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* Returns the data merged from multiple origins.
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*
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* There are three sources of data (origins) for a site:
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* default, theme, and custom. The custom's has higher priority
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* than the theme's, and the theme's higher than default'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 Added user data, removed the `$settings` parameter,
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* added the `$origin` parameter.
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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 'custom'. Default 'custom'.
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* @return WP_Theme_JSON
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*/
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public static function get_merged_data( $origin = 'custom' ) {
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if ( is_array( $origin ) ) {
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_deprecated_argument( __FUNCTION__, '5.9.0' );
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}
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$result = new WP_Theme_JSON();
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$result->merge( static::get_core_data() );
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$result->merge( static::get_theme_data() );
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if ( 'custom' === $origin ) {
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$result->merge( static::get_user_data() );
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}
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return $result;
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}
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/**
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* Returns the ID of the custom post type
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* that stores user data.
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*
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* @since 5.9.0
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*
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* @return integer|null
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*/
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public static function get_user_global_styles_post_id() {
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if ( null !== static::$user_custom_post_type_id ) {
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return static::$user_custom_post_type_id;
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}
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$user_cpt = static::get_user_data_from_wp_global_styles( wp_get_theme(), true );
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if ( array_key_exists( 'ID', $user_cpt ) ) {
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static::$user_custom_post_type_id = $user_cpt['ID'];
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}
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return static::$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 Added a 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( static::$theme_has_support ) ) {
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static::$theme_has_support = (
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is_readable( static::get_file_path_from_theme( 'theme.json' ) ) ||
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is_readable( static::get_file_path_from_theme( 'theme.json', true ) )
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);
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}
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return static::$theme_has_support;
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}
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/**
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* Builds the path to the given file and checks that it is readable.
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*
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* If it isn't, returns an empty string, otherwise returns the whole file path.
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*
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* @since 5.8.0
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* @since 5.9.0 Adapted to work with child themes, added the `$template` argument.
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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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protected 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 ) ? $candidate : '';
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}
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/**
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* Cleans the cached data so it can be recalculated.
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*
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* @since 5.8.0
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* @since 5.9.0 Added the `$user`, `$user_custom_post_type_id`,
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* and `$i18n_schema` variables to reset.
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*/
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public static function clean_cached_data() {
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static::$core = null;
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static::$theme = null;
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static::$user = null;
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static::$user_custom_post_type_id = null;
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static::$theme_has_support = null;
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static::$i18n_schema = null;
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}
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}
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