Editor: Restore starter content modal

packages/base-styles/_z-index.scss

@@ -199,6 +199,7 @@ $z-layers: (
 
 	// Ensure modal footer actions appear above modal contents
 	".editor-start-template-options__modal__actions": 1,
+	".editor-start-page-options__modal__actions": 1,
 
 	// Ensure checkbox + actions don't overlap table header
 	".dataviews-view-table thead": 1,

packages/block-editor/src/components/inserter/block-patterns-explorer/index.js

@@ -14,8 +14,9 @@ import { usePatternCategories } from '../block-patterns-tab/use-pattern-categori
 
 function PatternsExplorer( { initialCategory, rootClientId } ) {
 	const [ searchValue, setSearchValue ] = useState( '' );
-	const [ selectedCategory, setSelectedCategory ] =
-		useState( initialCategory );
+	const [ selectedCategory, setSelectedCategory ] = useState(
+		initialCategory?.name
+	);
 
 	const patternCategories = usePatternCategories( rootClientId );
 

packages/block-editor/src/components/inserter/block-patterns-tab/index.js

@@ -70,9 +70,7 @@ function BlockPatternsTab( {
 			) }
 			{ showPatternsExplorer && (
 				<PatternsExplorerModal
-					initialCategory={
-						selectedCategory?.name || categories[ 0 ]?.name
-					}
+					initialCategory={ selectedCategory || categories[ 0 ] }
 					patternCategories={ categories }
 					onModalClose={ () => setShowPatternsExplorer( false ) }
 					rootClientId={ rootClientId }

packages/block-editor/src/components/inserter/block-patterns-tab/pattern-category-previews.js

@@ -69,19 +69,19 @@ export function PatternCategoryPreviews( {
 					return false;
 				}
 
-				if ( category.name === allPatternsCategory?.name ) {
+				if ( category.name === allPatternsCategory.name ) {
 					return true;
 				}
 
 				if (
-					category.name === myPatternsCategory?.name &&
+					category.name === myPatternsCategory.name &&
 					pattern.type === INSERTER_PATTERN_TYPES.user
 				) {
 					return true;
 				}
 
 				if (
-					category.name === starterPatternsCategory?.name &&
+					category.name === starterPatternsCategory.name &&
 					pattern.blockTypes?.includes( 'core/post-content' )
 				) {
 					return true;
@@ -149,7 +149,7 @@ export function PatternCategoryPreviews( {
 							level={ 4 }
 							as="div"
 						>
-							{ category?.label }
+							{ category.label }
 						</Heading>
 					</FlexBlock>
 					<PatternsFilter

packages/block-editor/src/components/inserter/block-patterns-tab/patterns-filter.js

@@ -25,7 +25,7 @@ import {
 const getShouldDisableSyncFilter = ( sourceFilter ) =>
 	sourceFilter !== 'all' && sourceFilter !== 'user';
 const getShouldHideSourcesFilter = ( category ) => {
-	return category?.name === myPatternsCategory.name;
+	return category.name === myPatternsCategory.name;
 };
 
 const PATTERN_SOURCE_MENU_OPTIONS = [
@@ -60,7 +60,7 @@ export function PatternsFilter( {
 	// the user may be confused when switching to another category if the haven't explicitly set
 	// this filter themselves.
 	const currentPatternSourceFilter =
-		category?.name === myPatternsCategory.name
+		category.name === myPatternsCategory.name
 			? INSERTER_PATTERN_TYPES.user
 			: patternSourceFilter;
 

packages/block-editor/src/components/inserter/category-tabs/index.js

@@ -65,9 +65,7 @@ function CategoryTabs( {
 						key={ category.name }
 						tabId={ category.name }
 						aria-current={
-							category.name === selectedCategory?.name
-								? 'true'
-								: undefined
+							category === selectedCategory ? 'true' : undefined
 						}
 					>
 						{ category.label }

packages/block-editor/src/hooks/use-zoom-out.js

@@ -2,14 +2,13 @@
  * WordPress dependencies
  */
 import { useSelect, useDispatch } from '@wordpress/data';
-import { useEffect, useRef, useContext } from '@wordpress/element';
+import { useEffect, useRef } from '@wordpress/element';
 
 /**
  * Internal dependencies
  */
 import { store as blockEditorStore } from '../store';
 import { unlock } from '../lock-unlock';
-import BlockContext from '../components/block-context';
 
 /**
  * A hook used to set the editor mode to zoomed out mode, invoking the hook sets the mode.
@@ -20,7 +19,6 @@ import BlockContext from '../components/block-context';
  * @param {boolean} enabled If we should enter into zoomOut mode or not
  */
 export function useZoomOut( enabled = true ) {
-	const { postId } = useContext( BlockContext );
 	const { setZoomLevel, resetZoomLevel } = unlock(
 		useDispatch( blockEditorStore )
 	);
@@ -39,7 +37,6 @@ export function useZoomOut( enabled = true ) {
 
 	const controlZoomLevelRef = useRef( false );
 	const isEnabledRef = useRef( enabled );
-	const postIdRef = useRef( postId );
 
 	/**
 	 * This hook tracks if the zoom state was changed manually by the user via clicking
@@ -58,11 +55,6 @@ export function useZoomOut( enabled = true ) {
 	useEffect( () => {
 		isEnabledRef.current = enabled;
 
-		// If the user created a new post/page, we should take control of the zoom level.
-		if ( postIdRef.current !== postId ) {
-			controlZoomLevelRef.current = true;
-		}
-
 		if ( enabled !== isZoomOut() ) {
 			controlZoomLevelRef.current = true;
 
@@ -79,5 +71,5 @@ export function useZoomOut( enabled = true ) {
 				resetZoomLevel();
 			}
 		};
-	}, [ enabled, isZoomOut, postId, resetZoomLevel, setZoomLevel ] );
+	}, [ enabled, isZoomOut, resetZoomLevel, setZoomLevel ] );
 }

packages/editor/src/components/start-page-options/index.js

@@ -1,8 +1,16 @@
 /**
  * WordPress dependencies
  */
-import { useEffect } from '@wordpress/element';
+import { Flex, FlexItem, Modal, ToggleControl } from '@wordpress/components';
+import { __ } from '@wordpress/i18n';
+import { useState, useMemo, useEffect } from '@wordpress/element';
+import {
+	store as blockEditorStore,
+	__experimentalBlockPatternsList as BlockPatternsList,
+} from '@wordpress/block-editor';
 import { useSelect, useDispatch } from '@wordpress/data';
+import { store as coreStore } from '@wordpress/core-data';
+import { __unstableSerializeAndClean } from '@wordpress/blocks';
 import { store as preferencesStore } from '@wordpress/preferences';
 import { store as interfaceStore } from '@wordpress/interface';
 
@@ -11,48 +19,166 @@ import { store as interfaceStore } from '@wordpress/interface';
  */
 import { store as editorStore } from '../../store';
 
+export function useStartPatterns() {
+	// A pattern is a start pattern if it includes 'core/post-content' in its blockTypes,
+	// and it has no postTypes declared and the current post type is page or if
+	// the current post type is part of the postTypes declared.
+	const { blockPatternsWithPostContentBlockType, postType } = useSelect(
+		( select ) => {
+			const { getPatternsByBlockTypes, getBlocksByName } =
+				select( blockEditorStore );
+			const { getCurrentPostType, getRenderingMode } =
+				select( editorStore );
+			const rootClientId =
+				getRenderingMode() === 'post-only'
+					? ''
+					: getBlocksByName( 'core/post-content' )?.[ 0 ];
+			return {
+				blockPatternsWithPostContentBlockType: getPatternsByBlockTypes(
+					'core/post-content',
+					rootClientId
+				),
+				postType: getCurrentPostType(),
+			};
+		},
+		[]
+	);
+
+	return useMemo( () => {
+		if ( ! blockPatternsWithPostContentBlockType?.length ) {
+			return [];
+		}
+
+		/*
+		 * Filter patterns without postTypes declared if the current postType is page
+		 * or patterns that declare the current postType in its post type array.
+		 */
+		return blockPatternsWithPostContentBlockType.filter( ( pattern ) => {
+			return (
+				( postType === 'page' && ! pattern.postTypes ) ||
+				( Array.isArray( pattern.postTypes ) &&
+					pattern.postTypes.includes( postType ) )
+			);
+		} );
+	}, [ postType, blockPatternsWithPostContentBlockType ] );
+}
+
+function PatternSelection( { blockPatterns, onChoosePattern } ) {
+	const { editEntityRecord } = useDispatch( coreStore );
+	const { postType, postId } = useSelect( ( select ) => {
+		const { getCurrentPostType, getCurrentPostId } = select( editorStore );
+
+		return {
+			postType: getCurrentPostType(),
+			postId: getCurrentPostId(),
+		};
+	}, [] );
+	return (
+		<BlockPatternsList
+			blockPatterns={ blockPatterns }
+			onClickPattern={ ( _pattern, blocks ) => {
+				editEntityRecord( 'postType', postType, postId, {
+					blocks,
+					content: ( { blocks: blocksForSerialization = [] } ) =>
+						__unstableSerializeAndClean( blocksForSerialization ),
+				} );
+				onChoosePattern();
+			} }
+		/>
+	);
+}
+
+function StartPageOptionsModal( { onClose } ) {
+	const [ showStartPatterns, setShowStartPatterns ] = useState( true );
+	const { set: setPreference } = useDispatch( preferencesStore );
+	const startPatterns = useStartPatterns();
+	const hasStartPattern = startPatterns.length > 0;
+
+	if ( ! hasStartPattern ) {
+		return null;
+	}
+
+	function handleClose() {
+		onClose();
+		setPreference( 'core', 'enableChoosePatternModal', showStartPatterns );
+	}
+
+	return (
+		<Modal
+			className="editor-start-page-options__modal"
+			title={ __( 'Choose a pattern' ) }
+			isFullScreen
+			onRequestClose={ handleClose }
+		>
+			<div className="editor-start-page-options__modal-content">
+				<PatternSelection
+					blockPatterns={ startPatterns }
+					onChoosePattern={ handleClose }
+				/>
+			</div>
+			<Flex
+				className="editor-start-page-options__modal__actions"
+				justify="flex-end"
+				expanded={ false }
+			>
+				<FlexItem>
+					<ToggleControl
+						__nextHasNoMarginBottom
+						checked={ showStartPatterns }
+						label={ __( 'Show starter patterns' ) }
+						help={ __(
+							'Shows starter patterns when creating a new page.'
+						) }
+						onChange={ ( newValue ) => {
+							setShowStartPatterns( newValue );
+						} }
+					/>
+				</FlexItem>
+			</Flex>
+		</Modal>
+	);
+}
+
 export default function StartPageOptions() {
-	const { postId, enabled } = useSelect( ( select ) => {
+	const [ isOpen, setIsOpen ] = useState( false );
+	const { isEditedPostDirty, isEditedPostEmpty } = useSelect( editorStore );
+	const { isModalActive } = useSelect( interfaceStore );
+	const { enabled, postId } = useSelect( ( select ) => {
 		const { getCurrentPostId, getCurrentPostType } = select( editorStore );
-		const preferencesModalActive =
-			select( interfaceStore ).isModalActive( 'editor/preferences' );
 		const choosePatternModalEnabled = select( preferencesStore ).get(
 			'core',
 			'enableChoosePatternModal'
 		);
 		return {
 			postId: getCurrentPostId(),
 			enabled:
-				choosePatternModalEnabled &&
-				! preferencesModalActive &&
-				'page' === getCurrentPostType(),
+				choosePatternModalEnabled && 'page' === getCurrentPostType(),
 		};
 	}, [] );
-	const { isEditedPostDirty, isEditedPostEmpty } = useSelect( editorStore );
-	const { setIsInserterOpened } = useDispatch( editorStore );
 
+	// Note: The `postId` ensures the effect re-runs when pages are switched without remounting the component.
+	// Examples: changing pages in the List View, creating a new page via Command Palette.
 	useEffect( () => {
-		if ( ! enabled ) {
-			return;
-		}
-
 		const isFreshPage = ! isEditedPostDirty() && isEditedPostEmpty();
-		if ( isFreshPage ) {
-			setIsInserterOpened( {
-				tab: 'patterns',
-				category: 'core/starter-content',
-			} );
+		// Prevents immediately opening when features is enabled via preferences modal.
+		const isPreferencesModalActive = isModalActive( 'editor/preferences' );
+		if ( ! enabled || ! isFreshPage || isPreferencesModalActive ) {
+			return;
 		}
 
-		// Note: The `postId` ensures the effect re-runs when pages are switched without remounting the component.
-		// Examples: changing pages in the List View, creating a new page via Command Palette.
+		// Open the modal after the initial render for a new page.
+		setIsOpen( true );
 	}, [
-		postId,
 		enabled,
-		setIsInserterOpened,
+		postId,
 		isEditedPostDirty,
 		isEditedPostEmpty,
+		isModalActive,
 	] );
 
-	return null;
+	if ( ! isOpen ) {
+		return null;
+	}
+
+	return <StartPageOptionsModal onClose={ () => setIsOpen( false ) } />;
 }

packages/editor/src/components/start-page-options/style.scss

@@ -1,3 +1,30 @@
+$actions-height: 92px;
+
+.editor-start-page-options__modal {
+	.editor-start-page-options__modal__actions {
+		position: absolute;
+		bottom: 0;
+		width: 100%;
+		height: $actions-height;
+		background-color: $white;
+		margin-left: - $grid-unit-40;
+		margin-right: - $grid-unit-40;
+		padding-left: $grid-unit-40;
+		padding-right: $grid-unit-40;
+		border-top: 1px solid $gray-300;
+		z-index: z-index(".editor-start-page-options__modal__actions");
+	}
+
+	.block-editor-block-patterns-list {
+		// Since the actions container is positioned absolutely,
+		// this padding bottom ensures that the content wrapper will properly
+		// detect overflowing content and start showing scrollbars at the right
+		// moment. Without this padding, the content would render under the actions
+		// bar without causing the wrapper to show a scrollbar.
+		padding-bottom: $actions-height;
+	}
+}
+
 // 2 column masonry layout.
 .editor-start-page-options__modal-content .block-editor-block-patterns-list {
 	column-count: 2;