Move default template types and template part areas to REST API

lib/compat/wordpress-6.8/template-parts.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Adds the default template part areas to the REST API index.
+ *
+ * This function exposes the default template part areas through the WordPress REST API.
+ * Note: This function backports into the wp-includes/rest-api/class-wp-rest-server.php file.
+ *
+ * @param WP_REST_Response $response REST API response.
+ * @return WP_REST_Response Modified REST API response with default template part areas.
+ */
+function gutenberg_add_default_template_part_areas_to_index( WP_REST_Response $response ) {
+	$response->data['default_template_part_areas'] = get_allowed_block_template_part_areas();
+	return $response;
+}
+
+add_action( 'rest_index', 'gutenberg_add_default_template_part_areas_to_index' );
+
+/**
+ * Adds the default template types to the REST API index.
+ *
+ * This function exposes the default template types through the WordPress REST API.
+ * Note: This function backports into the wp-includes/rest-api/class-wp-rest-server.php file.
+ *
+ * @param WP_REST_Response $response REST API response.
+ * @return WP_REST_Response Modified REST API response with default template part areas.
+ */
+function gutenberg_add_default_template_types_to_index( WP_REST_Response $response ) {
+	$indexed_template_types = array();
+	foreach ( get_default_block_template_types() as $slug => $template_type ) {
+		$template_type['slug']    = (string) $slug;
+		$indexed_template_types[] = $template_type;
+	}
+
+	$response->data['default_template_types'] = $indexed_template_types;
+	return $response;
+}
+
+add_action( 'rest_index', 'gutenberg_add_default_template_types_to_index' );

lib/load.php

@@ -49,6 +49,7 @@ function gutenberg_is_experiment_enabled( $name ) {
 	// WordPress 6.8 compat.
 	require __DIR__ . '/compat/wordpress-6.8/block-comments.php';
 	require __DIR__ . '/compat/wordpress-6.8/class-gutenberg-rest-comment-controller-6-8.php';
+	require __DIR__ . '/compat/wordpress-6.8/template-parts.php';
 
 	// Plugin specific code.
 	require_once __DIR__ . '/class-wp-rest-global-styles-controller-gutenberg.php';

packages/block-library/src/navigation/use-template-part-area-label.js

@@ -11,6 +11,7 @@ import { useSelect } from '@wordpress/data';
 
 // TODO: this util should perhaps be refactored somewhere like core-data.
 import { createTemplatePartId } from '../template-part/edit/utils/create-template-part-id';
+import { getTemplatePartIcon } from '../template-part/edit/utils/get-template-part-icon';
 
 export default function useTemplatePartAreaLabel( clientId ) {
 	return useSelect(
@@ -35,16 +36,15 @@ export default function useTemplatePartAreaLabel( clientId ) {
 				return;
 			}
 
-			// FIXME: @wordpress/block-library should not depend on @wordpress/editor.
-			// Blocks can be loaded into a *non-post* block editor.
-			// This code is lifted from this file:
-			// packages/block-library/src/template-part/edit/advanced-controls.js
-			/* eslint-disable @wordpress/data-no-store-string-literals */
-			const definedAreas =
-				select(
-					'core/editor'
-				).__experimentalGetDefaultTemplatePartAreas();
-			/* eslint-enable @wordpress/data-no-store-string-literals */
+			const defaultTemplatePartAreas =
+				select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+					?.default_template_part_areas || [];
+
+			const definedAreas = defaultTemplatePartAreas.map( ( item ) => ( {
+				...item,
+				icon: getTemplatePartIcon( item.icon ),
+			} ) );
+
 			const { getCurrentTheme, getEditedEntityRecord } =
 				select( coreStore );
 

packages/block-library/src/template-part/edit/advanced-controls.js

@@ -1,7 +1,7 @@
 /**
  * WordPress dependencies
  */
-import { useEntityProp } from '@wordpress/core-data';
+import { useEntityProp, store as coreStore } from '@wordpress/core-data';
 import { SelectControl, TextControl } from '@wordpress/components';
 import { sprintf, __ } from '@wordpress/i18n';
 import { useSelect } from '@wordpress/data';
@@ -10,6 +10,7 @@ import { useSelect } from '@wordpress/data';
  * Internal dependencies
  */
 import { TemplatePartImportControls } from './import-controls';
+import { getTemplatePartIcon } from './utils/get-template-part-icon';
 
 const htmlElementMessages = {
 	header: __(
@@ -54,14 +55,17 @@ export function TemplatePartAdvancedControls( {
 		templatePartId
 	);
 
-	const definedAreas = useSelect( ( select ) => {
-		// FIXME: @wordpress/block-library should not depend on @wordpress/editor.
-		// Blocks can be loaded into a *non-post* block editor.
-		/* eslint-disable-next-line @wordpress/data-no-store-string-literals */
-		return select(
-			'core/editor'
-		).__experimentalGetDefaultTemplatePartAreas();
-	}, [] );
+	const defaultTemplatePartAreas = useSelect(
+		( select ) =>
+			select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+				?.default_template_part_areas || [],
+		[]
+	);
+
+	const definedAreas = defaultTemplatePartAreas.map( ( item ) => ( {
+		...item,
+		icon: getTemplatePartIcon( item.icon ),
+	} ) );
 
 	const areaOptions = definedAreas.map( ( { label, area: _area } ) => ( {
 		label,

packages/block-library/src/template-part/edit/utils/get-template-part-icon.js

@@ -0,0 +1,20 @@
+/**
+ * WordPress dependencies
+ */
+import {
+	header as headerIcon,
+	footer as footerIcon,
+	sidebar as sidebarIcon,
+	symbolFilled as symbolFilledIcon,
+} from '@wordpress/icons';
+
+export const getTemplatePartIcon = ( iconName ) => {
+	if ( 'header' === iconName ) {
+		return headerIcon;
+	} else if ( 'footer' === iconName ) {
+		return footerIcon;
+	} else if ( 'sidebar' === iconName ) {
+		return sidebarIcon;
+	}
+	return symbolFilledIcon;
+};

packages/block-library/src/template-part/edit/utils/hooks.js

@@ -136,14 +136,9 @@ export function useCreateTemplatePartFromBlocks( area, setAttributes ) {
 export function useTemplatePartArea( area ) {
 	return useSelect(
 		( select ) => {
-			// FIXME: @wordpress/block-library should not depend on @wordpress/editor.
-			// Blocks can be loaded into a *non-post* block editor.
-			/* eslint-disable @wordpress/data-no-store-string-literals */
 			const definedAreas =
-				select(
-					'core/editor'
-				).__experimentalGetDefaultTemplatePartAreas();
-			/* eslint-enable @wordpress/data-no-store-string-literals */
+				select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+					?.default_template_part_areas || [];
 
 			const selectedArea = definedAreas.find(
 				( definedArea ) => definedArea.area === area

packages/block-library/src/template-part/variations.js

@@ -3,23 +3,11 @@
  */
 import { store as coreDataStore } from '@wordpress/core-data';
 import { select } from '@wordpress/data';
-import {
-	header as headerIcon,
-	footer as footerIcon,
-	sidebar as sidebarIcon,
-	symbolFilled as symbolFilledIcon,
-} from '@wordpress/icons';
 
-function getTemplatePartIcon( iconName ) {
-	if ( 'header' === iconName ) {
-		return headerIcon;
-	} else if ( 'footer' === iconName ) {
-		return footerIcon;
-	} else if ( 'sidebar' === iconName ) {
-		return sidebarIcon;
-	}
-	return symbolFilledIcon;
-}
+/**
+ * Internal dependencies
+ */
+import { getTemplatePartIcon } from './edit/utils/get-template-part-icon';
 
 export function enhanceTemplatePartVariations( settings, name ) {
 	if ( name !== 'core/template-part' ) {

packages/core-data/src/entities.js

@@ -31,6 +31,8 @@ export const rootEntitiesConfig = [
 				'site_icon_url',
 				'site_logo',
 				'timezone_string',
+				'default_template_part_areas',
+				'default_template_types',
 				'url',
 			].join( ',' ),
 		},

packages/edit-site/src/components/add-new-template/utils.js

@@ -3,7 +3,6 @@
  */
 import { useSelect } from '@wordpress/data';
 import { store as coreStore } from '@wordpress/core-data';
-import { store as editorStore } from '@wordpress/editor';
 import { decodeEntities } from '@wordpress/html-entities';
 import { useMemo, useCallback } from '@wordpress/element';
 import { __, _x, sprintf } from '@wordpress/i18n';
@@ -69,7 +68,8 @@ export const useExistingTemplates = () => {
 export const useDefaultTemplateTypes = () => {
 	return useSelect(
 		( select ) =>
-			select( editorStore ).__experimentalGetDefaultTemplateTypes(),
+			select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+				?.default_template_types || [],
 		[]
 	);
 };

packages/edit-site/src/components/editor/use-editor-title.js

@@ -4,33 +4,49 @@
 import { _x, sprintf } from '@wordpress/i18n';
 import { useSelect } from '@wordpress/data';
 import { store as coreStore } from '@wordpress/core-data';
-import { store as editorStore } from '@wordpress/editor';
 import { decodeEntities } from '@wordpress/html-entities';
+import { privateApis as editorPrivateApis } from '@wordpress/editor';
 
 /**
  * Internal dependencies
  */
 import useTitle from '../routes/use-title';
 import { POST_TYPE_LABELS, TEMPLATE_POST_TYPE } from '../../utils/constants';
+import { unlock } from '../../lock-unlock';
+
+const { getTemplateInfo } = unlock( editorPrivateApis );
 
 function useEditorTitle( postType, postId ) {
 	const { title, isLoaded } = useSelect(
 		( select ) => {
 			const { getEditedEntityRecord, hasFinishedResolution } =
 				select( coreStore );
-			const { __experimentalGetTemplateInfo: getTemplateInfo } =
-				select( editorStore );
+
 			const _record = getEditedEntityRecord(
 				'postType',
 				postType,
 				postId
 			);
+
+			const templateAreas =
+				select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+					?.default_template_part_areas || [];
+
+			const templateTypes =
+				select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+					?.default_template_types || [];
+
+			const templateInfo = getTemplateInfo( {
+				template: _record,
+				templateAreas,
+				templateTypes,
+			} );
+
 			const _isLoaded = hasFinishedResolution( 'getEditedEntityRecord', [
 				'postType',
 				postType,
 				postId,
 			] );
-			const templateInfo = getTemplateInfo( _record );
 
 			return {
 				title: templateInfo.title,

packages/edit-site/src/components/page-patterns/header.js

@@ -9,7 +9,7 @@ import {
 	__experimentalText as Text,
 	__experimentalVStack as VStack,
 } from '@wordpress/components';
-import { store as editorStore } from '@wordpress/editor';
+import { store as coreStore } from '@wordpress/core-data';
 import { useSelect } from '@wordpress/data';
 import { __, sprintf } from '@wordpress/i18n';
 import { moreVertical } from '@wordpress/icons';
@@ -32,7 +32,8 @@ export default function PatternsHeader( {
 	const { patternCategories } = usePatternCategories();
 	const templatePartAreas = useSelect(
 		( select ) =>
-			select( editorStore ).__experimentalGetDefaultTemplatePartAreas(),
+			select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+				?.default_template_part_areas || [],
 		[]
 	);
 

packages/edit-site/src/components/page-patterns/use-patterns.js

@@ -4,7 +4,6 @@
 import { parse } from '@wordpress/blocks';
 import { useSelect, createSelector } from '@wordpress/data';
 import { store as coreStore } from '@wordpress/core-data';
-import { store as editorStore } from '@wordpress/editor';
 import { useMemo } from '@wordpress/element';
 
 /**
@@ -28,8 +27,7 @@ const selectTemplateParts = createSelector(
 	( select, categoryId, search = '' ) => {
 		const { getEntityRecords, isResolving: isResolvingSelector } =
 			select( coreStore );
-		const { __experimentalGetDefaultTemplatePartAreas } =
-			select( editorStore );
+
 		const query = { per_page: -1 };
 		const templateParts =
 			getEntityRecords( 'postType', TEMPLATE_PART_POST_TYPE, query ) ??
@@ -38,7 +36,10 @@ const selectTemplateParts = createSelector(
 		// In the case where a custom template part area has been removed we need
 		// the current list of areas to cross check against so orphaned template
 		// parts can be treated as uncategorized.
-		const knownAreas = __experimentalGetDefaultTemplatePartAreas() || [];
+		const knownAreas =
+			select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+				?.default_template_part_areas || [];
+
 		const templatePartAreas = knownAreas.map( ( area ) => area.area );
 
 		const templatePartHasCategory = ( item, category ) => {
@@ -78,7 +79,8 @@ const selectTemplateParts = createSelector(
 			TEMPLATE_PART_POST_TYPE,
 			{ per_page: -1 },
 		] ),
-		select( editorStore ).__experimentalGetDefaultTemplatePartAreas(),
+		select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+			?.default_template_part_areas,
 	]
 );
 

packages/edit-site/src/components/sidebar-navigation-screen-patterns/use-template-part-areas.js

@@ -1,9 +1,8 @@
 /**
  * WordPress dependencies
  */
-import { useEntityRecords } from '@wordpress/core-data';
+import { useEntityRecords, store as coreStore } from '@wordpress/core-data';
 import { useSelect } from '@wordpress/data';
-import { store as editorStore } from '@wordpress/editor';
 
 /**
  * Internal dependencies
@@ -18,7 +17,8 @@ const useTemplatePartsGroupedByArea = ( items ) => {
 
 	const templatePartAreas = useSelect(
 		( select ) =>
-			select( editorStore ).__experimentalGetDefaultTemplatePartAreas(),
+			select( coreStore ).getEntityRecord( 'root', '__unstableBase' )
+				?.default_template_part_areas || [],
 		[]
 	);
 
@@ -43,7 +43,7 @@ const useTemplatePartsGroupedByArea = ( items ) => {
 		const key = accumulator[ item.area ]
 			? item.area
 			: TEMPLATE_PART_AREA_DEFAULT_CATEGORY;
-		accumulator[ key ].templateParts.push( item );
+		accumulator[ key ]?.templateParts?.push( item );
 		return accumulator;
 	}, knownAreas );
 

packages/edit-site/src/index.js

@@ -10,10 +10,7 @@ import {
 import { dispatch } from '@wordpress/data';
 import deprecated from '@wordpress/deprecated';
 import { createRoot, StrictMode } from '@wordpress/element';
-import {
-	store as editorStore,
-	privateApis as editorPrivateApis,
-} from '@wordpress/editor';
+import { privateApis as editorPrivateApis } from '@wordpress/editor';
 import { store as preferencesStore } from '@wordpress/preferences';
 import {
 	registerLegacyWidgetBlock,
@@ -88,15 +85,6 @@ export function initializeEditor( id, settings ) {
 
 	dispatch( editSiteStore ).updateSettings( settings );
 
-	// Keep the defaultTemplateTypes in the core/editor settings too,
-	// so that they can be selected with core/editor selectors in any editor.
-	// This is needed because edit-site doesn't initialize with EditorProvider,
-	// which internally uses updateEditorSettings as well.
-	dispatch( editorStore ).updateEditorSettings( {
-		defaultTemplateTypes: settings.defaultTemplateTypes,
-		defaultTemplatePartAreas: settings.defaultTemplatePartAreas,
-	} );
-
 	// Prevent the default browser action for files dropped outside of dropzones.
 	window.addEventListener( 'dragover', ( e ) => e.preventDefault(), false );
 	window.addEventListener( 'drop', ( e ) => e.preventDefault(), false );