From 2dbcd8933e5d05130e2edc8b8ae7f22e685c2cd8 Mon Sep 17 00:00:00 2001
From: gziolo <gziolo@git.wordpress.org>
Date: Tue, 19 Jan 2021 11:06:14 +0000
Subject: [PATCH] Blocks: Add i18n support to register_block_type_from_metadata

Related Gutenberg issue: https://github.com/WordPress/gutenberg/issues/23636.
Related WP-CLI PR: https://github.com/wp-cli/i18n-command/pull/210.
Related documentation proposal: https://github.com/WordPress/gutenberg/blob/master/docs/designers-developers/developers/block-api/block-metadata.md#internationalization-not-implemented

Adds programatic i18n support to `register_block_type_from_metadata` function for block settings registered from `block.json` file that provides `textdomain` field.


Props swissspidy, ocean90.
Fixes #52301.


Built from https://develop.svn.wordpress.org/trunk@49981


git-svn-id: http://core.svn.wordpress.org/trunk@49682 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/blocks.php  | 53 +++++++++++++++++++++++++++++++++++++++--
 wp-includes/version.php |  2 +-
 2 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 1b5427340f..ace9811f32 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -134,7 +134,15 @@ function register_block_script_handle( $metadata, $field_name ) {
 		$script_asset['dependencies'],
 		$script_asset['version']
 	);
-	return $result ? $script_handle : false;
+	if ( ! $result ) {
+		return false;
+	}
+
+	if ( ! empty( $metadata['textdomain'] ) ) {
+		wp_set_script_translations( $script_handle, $metadata['textdomain'] );
+	}
+
+	return $script_handle;
 }
 
 /**
@@ -229,7 +237,48 @@ function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
 
 	foreach ( $property_mappings as $key => $mapped_key ) {
 		if ( isset( $metadata[ $key ] ) ) {
-			$settings[ $mapped_key ] = $metadata[ $key ];
+			$value = $metadata[ $key ];
+			if ( empty( $metadata['textdomain'] ) ) {
+				$settings[ $mapped_key ] = $value;
+				continue;
+			}
+			$textdomain = $metadata['textdomain'];
+			switch ( $key ) {
+				case 'title':
+				case 'description':
+					// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralContext,WordPress.WP.I18n.NonSingularStringLiteralDomain
+					$settings[ $mapped_key ] = translate_with_gettext_context( $value, sprintf( 'block %s', $key ), $textdomain );
+					break;
+				case 'keywords':
+					$settings[ $mapped_key ] = array();
+					if ( ! is_array( $value ) ) {
+						continue 2;
+					}
+
+					foreach ( $value as $keyword ) {
+						// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
+						$settings[ $mapped_key ][] = translate_with_gettext_context( $keyword, 'block keyword', $textdomain );
+					}
+
+					break;
+				case 'styles':
+					$settings[ $mapped_key ] = array();
+					if ( ! is_array( $value ) ) {
+						continue 2;
+					}
+
+					foreach ( $value as $style ) {
+						if ( ! empty( $style['label'] ) ) {
+							// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
+							$style['label'] = translate_with_gettext_context( $style['label'], 'block style label', $textdomain );
+						}
+						$settings[ $mapped_key ][] = $style;
+					}
+
+					break;
+				default:
+					$settings[ $mapped_key ] = $value;
+			}
 		}
 	}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 238184e497..aa4ec57ead 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.7-alpha-49980';
+$wp_version = '5.7-alpha-49981';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.