This commit:

- Resets the page content focus type if the canvas switches from edit mode
- Refactors use-page-content-blocks.js so that we can check in the editor if there are any page content blocks in the editor. If not, we do not render the show/hide template.

packages/edit-site/src/components/block-editor/block-editor-provider/default-block-editor-provider.js

@@ -51,13 +51,18 @@ export default function DefaultBlockEditorProvider( { children } ) {
 		'postType',
 		templateType
 	);
-	const pageContentBlock = usePageContentBlocks( blocks, isTemplateHidden );
+	const pageContentBlocks = usePageContentBlocks( {
+		blocks,
+		isPageContentFocused: isTemplateHidden,
+		wrapPageContent: true,
+	} );
+
 	return (
 		<ExperimentalBlockEditorProvider
 			settings={ settings }
 			value={
-				isTemplateHidden && pageContentBlock.length
-					? pageContentBlock
+				isTemplateHidden && pageContentBlocks.length
+					? pageContentBlocks
 					: blocks
 			}
 			onInput={ isTemplateHidden ? noop : onInput }

packages/edit-site/src/components/block-editor/block-editor-provider/use-page-content-blocks.js

@@ -38,21 +38,38 @@ function flattenBlocks( blocks, transform ) {
 
 /**
  * Returns a memoized array of blocks that contain only page content blocks,
- * surrounded by a group block to mimic the post editor.
- *
- * @param {Array}   blocks               Block list.
- * @param {boolean} isPageContentFocused Whether the page content has focus. If `true` return page content blocks. Default `false`.
+ * surrounded by an optional group block to mimic the post editor.
  *
+ * @param {Object}  props                      The argument for the function.
+ * @param {Array}   props.blocks               Block list.
+ * @param {boolean} props.isPageContentFocused Whether the page content has focus (and the surrounding template is inert). If `true` return page content blocks. Default `false`.
+ * @param {boolean} props.wrapPageContent      Whether to wrap the page content blocks in a group block to mimic the post editor. Default `false`.
  * @return {Array} Page content blocks.
  */
-export default function usePageContentBlocks(
-	blocks,
-	isPageContentFocused = false
-) {
+export default function usePageContentBlocks( {
+	blocks = [],
+	isPageContentFocused = false,
+	wrapPageContent = false,
+} ) {
 	return useMemo( () => {
-		if ( ! isPageContentFocused || ! blocks || ! blocks.length ) {
+		if ( ! isPageContentFocused || ! blocks?.length ) {
+			return [];
+		}
+
+		const innerBlocks = flattenBlocks( blocks, ( block ) =>
+			PAGE_CONTENT_BLOCK_TYPES[ block.name ]
+				? createBlock( block.name )
+				: undefined
+		);
+
+		if ( ! innerBlocks.length ) {
 			return [];
 		}
+
+		if ( ! wrapPageContent ) {
+			return innerBlocks;
+		}
+
 		return [
 			createBlock(
 				'core/group',
@@ -66,11 +83,7 @@ export default function usePageContentBlocks(
 						},
 					},
 				},
-				flattenBlocks( blocks, ( block ) => {
-					if ( PAGE_CONTENT_BLOCK_TYPES[ block.name ] ) {
-						return createBlock( block.name );
-					}
-				} )
+				innerBlocks
 			),
 		];
 	}, [ blocks, isPageContentFocused ] );

packages/edit-site/src/components/page-content-focus-manager/index.js

@@ -1,21 +1,49 @@
 /**
  * WordPress dependencies
  */
-import { useSelect } from '@wordpress/data';
-
+import { useSelect, useDispatch } from '@wordpress/data';
+import { useEffect } from '@wordpress/element';
 /**
  * Internal dependencies
  */
 import { store as editSiteStore } from '../../store';
 import DisableNonPageContentBlocks from './disable-non-page-content-blocks';
 import EditTemplateNotification from './edit-template-notification';
 import BackToPageNotification from './back-to-page-notification';
+import { unlock } from '../../lock-unlock';
 
 export default function PageContentFocusManager( { contentRef } ) {
-	const hasPageContentFocus = useSelect(
-		( select ) => select( editSiteStore ).hasPageContentFocus(),
+	const { hasPageContentFocus, pageContentFocusType, canvasMode } = useSelect(
+		( select ) => {
+			const { getPageContentFocusType, getCanvasMode } = unlock(
+				select( editSiteStore )
+			);
+			const _canvasMode = getCanvasMode();
+			return {
+				canvasMode: _canvasMode,
+				pageContentFocusType: getPageContentFocusType(),
+				shouldDisplayPageContentTemplates:
+					getCanvasMode() !== 'edit' &&
+					getPageContentFocusType() !== 'disableTemplate',
+				hasPageContentFocus:
+					select( editSiteStore ).hasPageContentFocus(),
+			};
+		},
 		[]
 	);
+	const { setPageContentFocusType } = unlock( useDispatch( editSiteStore ) );
+
+	/*
+	 * Ensure that the page content focus type is set to `disableTemplate` when
+	 * the canvas mode is not `edit`. This makes the experience consistent with
+	 * refreshing the page, which resets the page content focus type.
+	 */
+	useEffect( () => {
+		if ( canvasMode !== 'edit' && !! pageContentFocusType ) {
+			setPageContentFocusType( null );
+		}
+	}, [ canvasMode, pageContentFocusType ] );
+
 	return (
 		<>
 			{ hasPageContentFocus && <DisableNonPageContentBlocks /> }

packages/edit-site/src/components/sidebar-edit-mode/page-panels/edit-template.js

@@ -11,7 +11,7 @@ import {
 	__experimentalText as Text,
 } from '@wordpress/components';
 import { __ } from '@wordpress/i18n';
-import { store as coreStore } from '@wordpress/core-data';
+import { store as coreStore, useEntityBlockEditor } from '@wordpress/core-data';
 import { check } from '@wordpress/icons';
 
 /**
@@ -21,14 +21,15 @@ import { store as editSiteStore } from '../../../store';
 import SwapTemplateButton from './swap-template-button';
 import ResetDefaultTemplate from './reset-default-template';
 import { unlock } from '../../../lock-unlock';
+import usePageContentBlocks from '../../block-editor/block-editor-provider/use-page-content-blocks';
 
 const POPOVER_PROPS = {
 	className: 'edit-site-page-panels-edit-template__dropdown',
 	placement: 'bottom-start',
 };
 
 export default function EditTemplate() {
-	const { hasResolved, template, isTemplateHidden } = useSelect(
+	const { hasResolved, template, isTemplateHidden, postType } = useSelect(
 		( select ) => {
 			const { getEditedPostContext, getEditedPostType, getEditedPostId } =
 				select( editSiteStore );
@@ -38,11 +39,13 @@ export default function EditTemplate() {
 			const { getEditedEntityRecord, hasFinishedResolution } =
 				select( coreStore );
 			const _context = getEditedPostContext();
+			const _postType = getEditedPostType();
 			const queryArgs = [
 				'postType',
 				getEditedPostType(),
 				getEditedPostId(),
 			];
+
 			return {
 				context: _context,
 				hasResolved: hasFinishedResolution(
@@ -53,15 +56,23 @@ export default function EditTemplate() {
 				isTemplateHidden:
 					getCanvasMode() === 'edit' &&
 					getPageContentFocusType() === 'hideTemplate',
+				postType: _postType,
 			};
 		},
 		[]
 	);
 
+	const [ blocks ] = useEntityBlockEditor( 'postType', postType );
+
 	const { setHasPageContentFocus } = useDispatch( editSiteStore );
 	// Disable reason: `useDispatch` can't be called conditionally.
 	// eslint-disable-next-line @wordpress/no-unused-vars-before-return
 	const { setPageContentFocusType } = unlock( useDispatch( editSiteStore ) );
+	// Check if there are any post content block types in the blocks tree.
+	const pageContentBlocks = usePageContentBlocks( {
+		blocks,
+		isPageContentFocused: true,
+	} );
 
 	if ( ! hasResolved ) {
 		return null;
@@ -97,20 +108,24 @@ export default function EditTemplate() {
 							<SwapTemplateButton onClick={ onClose } />
 						</MenuGroup>
 						<ResetDefaultTemplate onClick={ onClose } />
-						<MenuGroup>
-							<MenuItem
-								icon={ ! isTemplateHidden ? check : undefined }
-								onClick={ () => {
-									setPageContentFocusType(
-										isTemplateHidden
-											? 'disableTemplate'
-											: 'hideTemplate'
-									);
-								} }
-							>
-								{ __( 'Template preview' ) }
-							</MenuItem>
-						</MenuGroup>
+						{ !! pageContentBlocks?.length && (
+							<MenuGroup>
+								<MenuItem
+									icon={
+										! isTemplateHidden ? check : undefined
+									}
+									onClick={ () => {
+										setPageContentFocusType(
+											isTemplateHidden
+												? 'disableTemplate'
+												: 'hideTemplate'
+										);
+									} }
+								>
+									{ __( 'Template preview' ) }
+								</MenuItem>
+							</MenuGroup>
+						) }
 					</>
 				) }
 			</DropdownMenu>