Site Editor: Add theme.json to export file

lib/compat/wordpress-5.9/block-template-utils.php

@@ -894,57 +894,3 @@ function block_footer_area() {
 		block_template_part( 'footer' );
 	}
 }
-
-if ( ! function_exists( 'wp_generate_block_templates_export_file' ) ) {
-	/**
-	 * Creates an export of the current templates and
-	 * template parts from the site editor at the
-	 * specified path in a ZIP file.
-	 *
-	 * @since 5.9.0
-	 *
-	 * @return WP_Error|string Path of the ZIP file or error on failure.
-	 */
-	function wp_generate_block_templates_export_file() {
-		if ( ! class_exists( 'ZipArchive' ) ) {
-			return new WP_Error( 'missing_zip_package', __( 'Zip Export not supported.', 'gutenberg' ) );
-		}
-
-		$obscura  = wp_generate_password( 12, false, false );
-		$filename = get_temp_dir() . 'edit-site-export-' . $obscura . '.zip';
-
-		$zip = new ZipArchive();
-		if ( true !== $zip->open( $filename, ZipArchive::CREATE ) ) {
-			return new WP_Error( 'unable_to_create_zip', __( 'Unable to open export file (archive) for writing.', 'gutenberg' ) );
-		}
-
-		$zip->addEmptyDir( 'theme' );
-		$zip->addEmptyDir( 'theme/templates' );
-		$zip->addEmptyDir( 'theme/parts' );
-
-		// Load templates into the zip file.
-		$templates = gutenberg_get_block_templates();
-		foreach ( $templates as $template ) {
-			$template->content = _remove_theme_attribute_in_block_template_content( $template->content );
-
-			$zip->addFromString(
-				'theme/templates/' . $template->slug . '.html',
-				$template->content
-			);
-		}
-
-		// Load template parts into the zip file.
-		$template_parts = gutenberg_get_block_templates( array(), 'wp_template_part' );
-		foreach ( $template_parts as $template_part ) {
-			$zip->addFromString(
-				'theme/parts/' . $template_part->slug . '.html',
-				$template_part->content
-			);
-		}
-
-		// Save changes to the zip file.
-		$zip->close();
-
-		return $filename;
-	}
-}

lib/compat/wordpress-6.0/block-template-utils.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * Temporary compatibility shims for features present in Gutenberg.
+ * This file should be removed when WordPress 6.0.0 becomes the lowest
+ * supported version by this plugin.
+ *
+ * @package gutenberg
+ */
+
+/**
+ * Creates an export of the current templates and
+ * template parts from the site editor at the
+ * specified path in a ZIP file.
+ *
+ * @since 5.9.0
+ * @since 6.0.0 Adds theme.json to the export archive.
+ *
+ * @return WP_Error|string Path of the ZIP file or error on failure.
+ */
+function gutenberg_generate_block_templates_export_file() {
+	if ( ! class_exists( 'ZipArchive' ) ) {
+		return new WP_Error( 'missing_zip_package', __( 'Zip Export not supported.', 'gutenberg' ) );
+	}
+
+	$obscura  = wp_generate_password( 12, false, false );
+	$filename = get_temp_dir() . 'edit-site-export-' . $obscura . '.zip';
+
+	$zip = new ZipArchive();
+	if ( true !== $zip->open( $filename, ZipArchive::CREATE ) ) {
+		return new WP_Error( 'unable_to_create_zip', __( 'Unable to open export file (archive) for writing.', 'gutenberg' ) );
+	}
+
+	$zip->addEmptyDir( 'theme' );
+	$zip->addEmptyDir( 'theme/templates' );
+	$zip->addEmptyDir( 'theme/parts' );
+
+	// Load templates into the zip file.
+	$templates = gutenberg_get_block_templates();
+	foreach ( $templates as $template ) {
+		$template->content = _remove_theme_attribute_in_block_template_content( $template->content );
+
+		$zip->addFromString(
+			'theme/templates/' . $template->slug . '.html',
+			$template->content
+		);
+	}
+
+	// Load template parts into the zip file.
+	$template_parts = gutenberg_get_block_templates( array(), 'wp_template_part' );
+	foreach ( $template_parts as $template_part ) {
+		$zip->addFromString(
+			'theme/parts/' . $template_part->slug . '.html',
+			$template_part->content
+		);
+	}
+
+	$tree = WP_Theme_JSON_Resolver_Gutenberg::get_theme_data();
+	$tree->merge( WP_Theme_JSON_Resolver_Gutenberg::get_user_data() );
+
+	$zip->addFromString(
+		'theme/theme.json',
+		wp_json_encode( $tree->export_theme_json(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE )
+	);
+
+	// Save changes to the zip file.
+	$zip->close();
+
+	return $filename;
+}

lib/compat/wordpress-5.9/class-wp-rest-edit-site-export-controller.php → lib/compat/wordpress-6.0/class-gutenberg-rest-edit-site-export-controller.php

@@ -14,7 +14,7 @@
  *
  * @see WP_REST_Controller
  */
-class WP_REST_Edit_Site_Export_Controller extends WP_REST_Controller {
+class Gutenberg_REST_Edit_Site_Export_Controller extends WP_REST_Controller {
 
 	/**
 	 * Constructs the controller.
@@ -37,7 +37,8 @@ public function register_routes() {
 					'callback'            => array( $this, 'export' ),
 					'permission_callback' => array( $this, 'permissions_check' ),
 				),
-			)
+			),
+			true // Override core route if already exists (WP 5.9).
 		);
 	}
 
@@ -66,7 +67,7 @@ public function permissions_check() {
 	 */
 	public function export() {
 		// Generate the export file.
-		$filename = wp_generate_block_templates_export_file();
+		$filename = gutenberg_generate_block_templates_export_file();
 
 		if ( is_wp_error( $filename ) ) {
 			$filename->add_data( array( 'status' => 500 ) );

lib/compat/wordpress-6.0/class-wp-theme-json-gutenberg.php

@@ -42,4 +42,46 @@ public function get_patterns() {
 		}
 		return array();
 	}
+
+	/**
+	 * Returns a valid theme.json for a theme.
+	 * Essentially, it flattens the preset data.
+	 *
+	 * @return array
+	 */
+	public function export_theme_json() {
+		$flattened_theme_json = $this->theme_json;
+		$nodes                = static::get_setting_nodes( $this->theme_json );
+		foreach ( $nodes as $node ) {
+			foreach ( static::PRESETS_METADATA as $preset_metadata ) {
+				$path   = array_merge( $node['path'], $preset_metadata['path'] );
+				$preset = _wp_array_get( $flattened_theme_json, $path, null );
+				if ( null !== $preset ) {
+					$items = array();
+					if ( isset( $preset['theme'] ) ) {
+						foreach ( $preset['theme'] as $item ) {
+							$slug = $item['slug'];
+							unset( $item['slug'] );
+							$items[ $slug ] = $item;
+						}
+					}
+					if ( isset( $preset['custom'] ) ) {
+						foreach ( $preset['custom'] as $item ) {
+							$slug = $item['slug'];
+							unset( $item['slug'] );
+							$items[ $slug ] = $item;
+						}
+					}
+					$flattened_preset = array();
+					foreach ( $items as $slug => $value ) {
+						$flattened_preset[] = array_merge( array( 'slug' => $slug ), $value );
+					}
+					_wp_array_set( $flattened_theme_json, $path, $flattened_preset );
+				}
+			}
+		}
+
+		return $flattened_theme_json;
+	}
+
 }

lib/compat/wordpress-6.0/rest-api.php

@@ -22,4 +22,15 @@ function gutenberg_register_rest_pattern_directory() {
 	$pattern_directory_controller = new Gutenberg_REST_Pattern_Directory_Controller();
 	$pattern_directory_controller->register_routes();
 }
-add_filter( 'rest_api_init', 'gutenberg_register_rest_pattern_directory' );
+add_action( 'rest_api_init', 'gutenberg_register_rest_pattern_directory' );
+
+/**
+ * Registers the Edit Site's Export REST API routes.
+ *
+ * @return void
+ */
+function gutenberg_register_edit_site_export_endpoint() {
+	$editor_settings = new Gutenberg_REST_Edit_Site_Export_Controller();
+	$editor_settings->register_routes();
+}
+add_action( 'rest_api_init', 'gutenberg_register_edit_site_export_endpoint' );

lib/load.php

@@ -55,10 +55,6 @@ function gutenberg_is_experiment_enabled( $name ) {
 		require_once __DIR__ . '/class-wp-rest-url-details-controller.php';
 	}
 
-	if ( ! class_exists( 'WP_REST_Edit_Site_Export_Controller' ) ) {
-		require_once __DIR__ . '/compat/wordpress-5.9/class-wp-rest-edit-site-export-controller.php';
-	}
-
 	require __DIR__ . '/rest-api.php';
 }
 
@@ -94,8 +90,10 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/compat/wordpress-5.9/move-theme-editor-menu-item.php';
 require __DIR__ . '/compat/wordpress-6.0/post-lock.php';
 require __DIR__ . '/compat/wordpress-6.0/blocks.php';
+require __DIR__ . '/compat/wordpress-6.0/block-template-utils.php';
 require __DIR__ . '/compat/wordpress-6.0/class-gutenberg-rest-global-styles-controller.php';
 require __DIR__ . '/compat/wordpress-6.0/class-gutenberg-rest-pattern-directory-controller.php';
+require __DIR__ . '/compat/wordpress-6.0/class-gutenberg-rest-edit-site-export-controller.php';
 require __DIR__ . '/compat/wordpress-6.0/class-wp-theme-json-gutenberg.php';
 require __DIR__ . '/compat/wordpress-6.0/rest-api.php';
 require __DIR__ . '/compat/wordpress-6.0/block-patterns.php';

lib/rest-api.php

@@ -209,14 +209,3 @@ function gutenberg_rest_user_collection_params_has_published_posts( $query_param
 	return $query_params;
 }
 add_filter( 'rest_user_collection_params', 'gutenberg_rest_user_collection_params_has_published_posts' );
-
-/**
- * Registers the Edit Site's Export REST API routes.
- *
- * @return void
- */
-function gutenberg_register_edit_site_export_endpoint() {
-	$editor_settings = new WP_REST_Edit_Site_Export_Controller();
-	$editor_settings->register_routes();
-}
-add_action( 'rest_api_init', 'gutenberg_register_edit_site_export_endpoint' );