Use the plugin classes in the REST endpoint

The endpoint landed in WordPress 5.9, so we need to make sure even
in this environment the plugin will call the WP_Theme_JSON_* classes.

lib/compat/wordpress-6.0/class-gutenberg-rest-global-styles-controller.php

@@ -60,6 +60,151 @@ public function get_theme_items_permissions_check( $request ) { // phpcs:ignore
  return true;
  }
 
+ /**
+ * Prepares a single global styles config for update.
+ *
+ * @since 5.9.0
+ *
+ * @param WP_REST_Request $request Request object.
+ * @return stdClass Changes to pass to wp_update_post.
+ */
+ protected function prepare_item_for_database( $request ) {
+ $changes = new stdClass();
+ $changes->ID = $request['id'];
+ $post = get_post( $request['id'] );
+ $existing_config = array();
+ if ( $post ) {
+ $existing_config = json_decode( $post->post_content, true );
+ $json_decoding_error = json_last_error();
+ if ( JSON_ERROR_NONE !== $json_decoding_error || ! isset( $existing_config['isGlobalStylesUserThemeJSON'] ) ||
+ ! $existing_config['isGlobalStylesUserThemeJSON'] ) {
+ $existing_config = array();
+ }
+ }
+ if ( isset( $request['styles'] ) || isset( $request['settings'] ) ) {
+ $config = array();
+ if ( isset( $request['styles'] ) ) {
+ $config['styles'] = $request['styles'];
+ } elseif ( isset( $existing_config['styles'] ) ) {
+ $config['styles'] = $existing_config['styles'];
+ }
+ if ( isset( $request['settings'] ) ) {
+ $config['settings'] = $request['settings'];
+ } elseif ( isset( $existing_config['settings'] ) ) {
+ $config['settings'] = $existing_config['settings'];
+ }
+ $config['isGlobalStylesUserThemeJSON'] = true;
+ $config['version'] = WP_Theme_JSON_Gutenberg::LATEST_SCHEMA;
+ $changes->post_content = wp_json_encode( $config );
+ }
+ // Post title.
+ if ( isset( $request['title'] ) ) {
+ if ( is_string( $request['title'] ) ) {
+ $changes->post_title = $request['title'];
+ } elseif ( ! empty( $request['title']['raw'] ) ) {
+ $changes->post_title = $request['title']['raw'];
+ }
+ }
+ return $changes;
+ }
+
+ /**
+ * Prepare a global styles config output for response.
+ *
+ * @since 5.9.0
+ *
+ * @param WP_Post $post Global Styles post object.
+ * @param WP_REST_Request $request Request object.
+ * @return WP_REST_Response Response object.
+ */
+ public function prepare_item_for_response( $post, $request ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
+ $raw_config = json_decode( $post->post_content, true );
+ $is_global_styles_user_theme_json = isset( $raw_config['isGlobalStylesUserThemeJSON'] ) && true === $raw_config['isGlobalStylesUserThemeJSON'];
+ $config = array();
+ if ( $is_global_styles_user_theme_json ) {
+ $config = ( new WP_Theme_JSON_Gutenberg( $raw_config, 'custom' ) )->get_raw_data();
+ }
+ // Base fields for every post.
+ $data = array();
+ $fields = $this->get_fields_for_response( $request );
+ if ( rest_is_field_included( 'id', $fields ) ) {
+ $data['id'] = $post->ID;
+ }
+ if ( rest_is_field_included( 'title', $fields ) ) {
+ $data['title'] = array();
+ }
+ if ( rest_is_field_included( 'title.raw', $fields ) ) {
+ $data['title']['raw'] = $post->post_title;
+ }
+ if ( rest_is_field_included( 'title.rendered', $fields ) ) {
+ add_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
+ $data['title']['rendered'] = get_the_title( $post->ID );
+ remove_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
+ }
+ if ( rest_is_field_included( 'settings', $fields ) ) {
+ $data['settings'] = ! empty( $config['settings'] ) && $is_global_styles_user_theme_json ? $config['settings'] : new stdClass();
+ }
+ if ( rest_is_field_included( 'styles', $fields ) ) {
+ $data['styles'] = ! empty( $config['styles'] ) && $is_global_styles_user_theme_json ? $config['styles'] : new stdClass();
+ }
+ $context = ! empty( $request['context'] ) ? $request['context'] : 'view';
+ $data = $this->add_additional_fields_to_object( $data, $request );
+ $data = $this->filter_response_by_context( $data, $context );
+ // Wrap the data in a response object.
+ $response = rest_ensure_response( $data );
+ $links = $this->prepare_links( $post->ID );
+ $response->add_links( $links );
+ if ( ! empty( $links['self']['href'] ) ) {
+ $actions = $this->get_available_actions();
+ $self = $links['self']['href'];
+ foreach ( $actions as $rel ) {
+ $response->add_link( $rel, $self );
+ }
+ }
+ return $response;
+ }
+
+ /**
+ * Returns the given theme global styles config.
+ *
+ * @since 5.9.0
+ *
+ * @param WP_REST_Request $request The request instance.
+ * @return WP_REST_Response|WP_Error
+ */
+ public function get_theme_item( $request ) {
+ if ( wp_get_theme()->get_stylesheet() !== $request['stylesheet'] ) {
+ // This endpoint only supports the active theme for now.
+ return new WP_Error(
+ 'rest_theme_not_found',
+ __( 'Theme not found.', 'gutenberg' ),
+ array( 'status' => 404 )
+ );
+ }
+ $theme = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data( 'theme' );
+ $data = array();
+ $fields = $this->get_fields_for_response( $request );
+ if ( rest_is_field_included( 'settings', $fields ) ) {
+ $data['settings'] = $theme->get_settings();
+ }
+ if ( rest_is_field_included( 'styles', $fields ) ) {
+ $raw_data = $theme->get_raw_data();
+ $data['styles'] = isset( $raw_data['styles'] ) ? $raw_data['styles'] : array();
+ }
+ $context = ! empty( $request['context'] ) ? $request['context'] : 'view';
+ $data = $this->add_additional_fields_to_object( $data, $request );
+ $data = $this->filter_response_by_context( $data, $context );
+ $response = rest_ensure_response( $data );
+ $links = array(
+ 'self' => array(
+ 'href' => rest_url( sprintf( '%s/%s/themes/%s', $this->namespace, $this->rest_base, $request['stylesheet'] ) ),
+ ),
+ );
+ $response->add_links( $links );
+ return $response;
+ }
+
+
  /**
  * Returns the given theme global styles variations.
  *
@@ -94,4 +239,5 @@ public function get_theme_items( $request ) {
 
  return $response;
  }
+
 }