Create Store Breadcrumbs Block (https://github.com/woocommerce/woocommerce-blocks/pull/8222)

* Initial structure for the breadcrumbs block

* ditch inline comment

* Fine-tune the store breadcrumbs

* Disable the breadcrumbs block for regular posts & pages

* Update the breadcrumbs block details.

* Add tests

* rely on sprintf to render the breadcrumb

* Ditch usesContext.

* Add a link to the breadcrumb editor preview

* Disable all pointer-events for the breadcrumb link in the editor preview

* Add the align attribute

* Use the Disabled component to prevent interactions and update the copy for the block description.

plugins/woocommerce-blocks/assets/js/blocks/breadcrumbs/block.json

@@ -0,0 +1,47 @@
+{
+	"name": "woocommerce/breadcrumbs",
+	"version": "1.0.0",
+	"title": "Store Breadcrumbs",
+	"description": "Enable customers to keep track of their location within the store and navigate back to parent pages.",
+	"category": "woocommerce",
+	"keywords": [ "WooCommerce" ],
+	"textdomain": "woo-gutenberg-products-block",
+	"attributes": {
+		"contentJustification": {
+			"type": "string"
+		},
+		"fontSize": {
+			"type": "string",
+			"default": "small"
+		},
+		"align": {
+			"type": "string",
+			"default": "wide"
+		}
+	},
+	"supports": {
+		"align": [ "wide", "full" ],
+		"color": {
+			"background": false,
+			"link": true,
+			"__experimentalDefaultControls": {
+				"text": true,
+				"link": true
+			}
+		},
+		"html": false,
+		"typography": {
+			"fontSize": true,
+			"lineHeight": true,
+			"__experimentalFontFamily": true,
+			"__experimentalFontStyle": true,
+			"__experimentalFontWeight": true,
+			"__experimentalTextTransform": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
+		}
+	},
+	"apiVersion": 2,
+	"$schema": "https://schemas.wp.org/trunk/block.json"
+}

plugins/woocommerce-blocks/assets/js/blocks/breadcrumbs/edit.tsx

@@ -0,0 +1,29 @@
+/**
+ * External dependencies
+ */
+import { useBlockProps } from '@wordpress/block-editor';
+import { Disabled } from '@wordpress/components';
+import { __ } from '@wordpress/i18n';
+
+export interface Attributes {
+	className?: string;
+}
+
+const Edit = () => {
+	const blockProps = useBlockProps( {
+		className: 'woocommerce wc-block-breadcrumbs',
+	} );
+
+	return (
+		<div { ...blockProps }>
+			<Disabled>
+				<a href="/">
+					{ __( 'Breadcrumbs', 'woo-gutenberg-products-block' ) }
+				</a>
+				{ __( ' / Navigation / Path', 'woo-gutenberg-products-block' ) }
+			</Disabled>
+		</div>
+	);
+};
+
+export default Edit;

plugins/woocommerce-blocks/assets/js/blocks/breadcrumbs/index.tsx

@@ -0,0 +1,29 @@
+/**
+ * External dependencies
+ */
+import { registerBlockType } from '@wordpress/blocks';
+import { Icon, queryPagination } from '@wordpress/icons';
+
+/**
+ * Internal dependencies
+ */
+import metadata from './block.json';
+import edit from './edit';
+
+registerBlockType( metadata, {
+	icon: {
+		src: (
+			<Icon
+				icon={ queryPagination }
+				className="wc-block-editor-components-block-icon"
+			/>
+		),
+	},
+	attributes: {
+		...metadata.attributes,
+	},
+	edit,
+	save() {
+		return null;
+	},
+} );

plugins/woocommerce-blocks/assets/js/blocks/breadcrumbs/style.scss

@@ -0,0 +1,3 @@
+.woocommerce.wc-block-breadcrumbs {
+	font-size: inherit;
+}

plugins/woocommerce-blocks/bin/webpack-entries.js

@@ -20,6 +20,7 @@ const blocks = {
 		customDir: 'reviews/all-reviews',
 	},
 	'attribute-filter': {},
+	breadcrumbs: {},
 	cart: {},
 	'catalog-sorting': {},
 	checkout: {},

plugins/woocommerce-blocks/src/BlockTypes/Breadcrumbs.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Automattic\WooCommerce\Blocks\BlockTypes;
+
+use Automattic\WooCommerce\Blocks\Utils\StyleAttributesUtils;
+
+/**
+ * CatalogSorting class.
+ */
+class Breadcrumbs extends AbstractBlock {
+
+	/**
+	 * Block name.
+	 *
+	 * @var string
+	 */
+	protected $block_name = 'breadcrumbs';
+
+	/**
+	 * Render the block.
+	 *
+	 * @param array    $attributes Block attributes.
+	 * @param string   $content Block content.
+	 * @param WP_Block $block Block instance.
+	 *
+	 * @return string | void Rendered block output.
+	 */
+	protected function render( $attributes, $content, $block ) {
+		ob_start();
+		woocommerce_breadcrumb();
+		$breadcrumb = ob_get_clean();
+
+		if ( ! $breadcrumb ) {
+			return;
+		}
+
+		$classname          = $attributes['className'] ?? '';
+		$classes_and_styles = StyleAttributesUtils::get_classes_and_styles_by_attributes( $attributes );
+
+		return sprintf(
+			'<div class="woocommerce wc-block-breadcrumbs %1$s %2$s" style="%3$s">%4$s</div>',
+			esc_attr( $classes_and_styles['classes'] ),
+			esc_attr( $classname ),
+			esc_attr( $classes_and_styles['styles'] ),
+			$breadcrumb
+		);
+	}
+
+	/**
+	 * Get the frontend script handle for this block type.
+	 *
+	 * @param string $key Data to get, or default to everything.
+	 */
+	protected function get_block_type_script( $key = null ) {
+		return null;
+	}
+}

plugins/woocommerce-blocks/src/BlockTypesController.php

@@ -168,6 +168,7 @@ final class BlockTypesController {
 			'AllProducts',
 			'AllReviews',
 			'AttributeFilter',
+			'Breadcrumbs',
 			'CatalogSorting',
 			'ClassicTemplate',
 			'CustomerAccount',
@@ -249,6 +250,7 @@ final class BlockTypesController {
 			$block_types = array_diff(
 				$block_types,
 				[
+					'Breadcrumbs',
 					'CatalogSorting',
 					'ClassicTemplate',
 					'ProductResultsCount',

plugins/woocommerce-blocks/tests/e2e/specs/backend/breadcrumbs.test.js

@@ -0,0 +1,61 @@
+/**
+ * External dependencies
+ */
+import {
+	canvas,
+	createNewPost,
+	insertBlock,
+	switchUserToAdmin,
+} from '@wordpress/e2e-test-utils';
+import { searchForBlock } from '@wordpress/e2e-test-utils/build/inserter';
+
+/**
+ * Internal dependencies
+ */
+import {
+	filterCurrentBlocks,
+	goToSiteEditor,
+	useTheme,
+	waitForCanvas,
+} from '../../utils.js';
+
+const block = {
+	name: 'Store Breadcrumbs',
+	slug: 'woocommerce/breadcrumbs',
+	class: '.wc-block-breadcrumbs',
+};
+
+describe( `${ block.name } Block`, () => {
+	it( 'in can not be inserted in a post', async () => {
+		await switchUserToAdmin();
+		await createNewPost( {
+			postType: 'post',
+			title: block.name,
+		} );
+		await searchForBlock( block.name );
+		expect( page ).toMatch( 'No results found.' );
+	} );
+
+	describe( 'in FSE editor', () => {
+		useTheme( 'emptytheme' );
+
+		beforeEach( async () => {
+			await goToSiteEditor();
+			await waitForCanvas();
+		} );
+
+		it( 'can be inserted in FSE area', async () => {
+			await insertBlock( block.name );
+			await expect( canvas() ).toMatchElement( block.class );
+		} );
+
+		it( 'can be inserted more than once', async () => {
+			await insertBlock( block.name );
+			await insertBlock( block.name );
+			const foo = await filterCurrentBlocks(
+				( b ) => b.name === block.slug
+			);
+			expect( foo ).toHaveLength( 2 );
+		} );
+	} );
+} );