Add end point

lib/blocks.php

@@ -45,3 +45,35 @@ function gutenberg_reregister_core_block_types() {
 	}
 }
 add_action( 'init', 'gutenberg_reregister_core_block_types' );
+
+function serialize_blocks( $blocks ) {
+	return implode( array_map( 'serialize_block', $blocks ) );
+}
+
+function serialize_block( $block ) {
+	$name = $block['blockName'];
+	if ( 0 === strpos( $name, 'core/' ) ) {
+		$name = substr( $name, strlen( 'core/' ) );
+	}
+
+	if ( empty( $block['attrs'] ) ) {
+		$opening_tag_suffix = '';
+	} else {
+		$opening_tag_suffix = ' ' . json_encode( $block['attrs'] );
+	}
+
+	if ( empty( $block['innerHTML'] ) ) {
+		return sprintf(
+			'<!-- wp:%s%s /-->',
+			$name,
+			$opening_tag_suffix
+		);
+	} else {
+		return sprintf(
+			'<!-- wp:%1$s%2$s -->%3$s<!-- /wp:%1$s -->',
+			$name,
+			$opening_tag_suffix,
+			$block['innerHTML']
+		);
+	}
+}

lib/class-wp-rest-widget-updater-controller.php

@@ -22,7 +22,7 @@ class WP_REST_Widget_Updater_Controller extends WP_REST_Controller {
 	 * @access public
 	 */
 	public function __construct() {
-		$this->namespace = 'wp/v2';
+		$this->namespace = '__experimental';
 		$this->rest_base = 'widgets';
 	}
 

lib/load.php

@@ -18,6 +18,9 @@
 	if ( ! class_exists( 'WP_REST_Widget_Updater_Controller' ) ) {
 		require dirname( __FILE__ ) . '/class-wp-rest-widget-updater-controller.php';
 	}
+	if ( ! class_exists( 'WP_REST_Sidebars_Controller' ) ) {
+		require dirname( __FILE__ ) . '/class-wp-rest-sidebars-controller.php';
+	}
 	/**
 	* End: Include for phase 2
 	*/
@@ -26,6 +29,7 @@
 
 require dirname( __FILE__ ) . '/blocks.php';
 require dirname( __FILE__ ) . '/client-assets.php';
+require dirname( __FILE__ ) . '/register.php';
 require dirname( __FILE__ ) . '/demo.php';
 require dirname( __FILE__ ) . '/widgets.php';
 require dirname( __FILE__ ) . '/widgets-page.php';

lib/register.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * Initialization and wp-admin integration for the Gutenberg editor plugin.
+ *
+ * @package gutenberg
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	die( 'Silence is golden.' );
+}
+
+function gutenberg_output_block_widget( $options, $block ) {
+	echo $options['before_widget'];
+	echo render_block( $block );
+	echo $options['after_widget'];
+}
+
+function gutenberg_swap_out_sidebars_blocks_for_block_widgets( $sidebars_items ) {
+	global $wp_registered_widgets;
+
+	foreach ( $sidebars_items as $sidebar_id => $items ) {
+		foreach ( $items as $index => $item ) {
+			if ( ! is_array( $item ) || ! isset( $item['blockName'] ) ) {
+				continue;
+			}
+
+			$widget_id = 'block-widget-' . md5( serialize( $item ) );
+
+			$sidebars_items[ $sidebar_id ][ $index ] = $widget_id;
+
+			if ( isset( $wp_registered_widgets[ $widget_id ] ) ) {
+				continue;
+			}
+
+			wp_register_sidebar_widget(
+				$widget_id,
+				// TODO: Can we get the block's title somehow?
+				/* translators: %s: Name of the block */
+				sprintf( __( 'Block: %s', 'gutenberg' ), $item['blockName'] ),
+				'gutenberg_output_block_widget',
+				array(
+					'classname'   => 'block-widget',
+					'description' => sprintf(
+						/* translators: %s: Name of the block */
+						__( 'Displays a ‘%s’ block.', 'gutenberg' ),
+						$item['blockName']
+					),
+				),
+				$item
+			);
+		}
+	}
+
+	return $sidebars_items;
+}
+add_filter( 'sidebars_widgets', 'gutenberg_swap_out_sidebars_blocks_for_block_widgets' );
+
+function gutenberg_swap_out_sidebars_block_widgets_for_blocks( $sidebars_widgets ) {
+	global $wp_registered_widgets;
+
+	foreach ( $sidebars_widgets as $sidebar_id => $widgets ) {
+		foreach ( $widgets as $index => $widget_id ) {
+			if ( 0 !== strpos( $widget_id, 'block-widget-' ) ) {
+				continue;
+			}
+
+			if ( ! isset( $wp_registered_widgets[ $widget_id ] ) ) {
+				unset( $sidebars_widgets[ $sidebar_id ][ $index ] );
+				continue;
+			}
+
+			$block = $wp_registered_widgets[ $widget_id ]['params'][0];
+
+			$sidebars_widgets[ $sidebar_id ][ $index ] = $block;
+		}
+	}
+
+	return $sidebars_widgets;
+}
+add_filter( 'pre_update_option_sidebars_widgets', 'gutenberg_swap_out_sidebars_block_widgets_for_blocks' );
+
+function gutenberg_get_sidebars_items() {
+	remove_filter( 'sidebars_widgets', 'gutenberg_swap_out_sidebars_blocks_for_block_widgets' );
+	$sidebars_widgets = wp_get_sidebars_widgets();
+	add_filter( 'sidebars_widgets', 'gutenberg_swap_out_sidebars_blocks_for_block_widgets' );
+	return $sidebars_widgets;
+}
+
+function gutenberg_set_sidebars_items( $sidebars_items ) {
+	remove_filter( 'pre_update_option_sidebars_widgets', 'gutenberg_swap_out_sidebars_block_widgets_for_blocks' );
+	wp_set_sidebars_widgets( $sidebars_items );
+	add_filter( 'pre_update_option_sidebars_widgets', 'gutenberg_swap_out_sidebars_block_widgets_for_blocks' );
+}

lib/rest-api.php

@@ -67,6 +67,12 @@ function gutenberg_register_rest_widget_updater_routes() {
 	$widgets_controller->register_routes();
 }
 add_action( 'rest_api_init', 'gutenberg_register_rest_widget_updater_routes' );
+
+function gutenberg_register_rest_sidebars_routes() {
+	$sidebar_controller = new WP_REST_Sidebars_Controller();
+	$sidebar_controller->register_routes();
+}
+add_action( 'rest_api_init', 'gutenberg_register_rest_sidebars_routes' );
 /**
  * End: Include for phase 2
  */