Added basic declaration for WC support to Twentytwenty.

assets/css/twenty-twenty.scss

@@ -0,0 +1,39 @@
+@import "mixins";
+
+/**
+ * Sass variables
+ */
+
+$headings: -apple-system, blinkmacsystemfont, "Helvetica Neue", helvetica, sans-serif;
+$body: nonbreakingspaceoverride, "Hoefler Text", garamond, "Times New Roman", serif;
+
+$body-color: #111;
+$highlights-color: #cd2653;
+
+/**
+ * Fonts
+ */
+@font-face {
+	font-family: star;
+	src: url(../fonts/star.eot);
+	src:
+		url(../fonts/star.eot?#iefix) format("embedded-opentype"),
+		url(../fonts/star.woff) format("woff"),
+		url(../fonts/star.ttf) format("truetype"),
+		url(../fonts/star.svg#star) format("svg");
+	font-weight: 400;
+	font-style: normal;
+}
+
+@font-face {
+	font-family: WooCommerce;
+	src: url(../fonts/WooCommerce.eot);
+	src:
+		url(../fonts/WooCommerce.eot?#iefix) format("embedded-opentype"),
+		url(../fonts/WooCommerce.woff) format("woff"),
+		url(../fonts/WooCommerce.ttf) format("truetype"),
+		url(../fonts/WooCommerce.svg#WooCommerce) format("svg");
+	font-weight: 400;
+	font-style: normal;
+}
+

includes/class-woocommerce.php

@@ -473,7 +473,7 @@ final class WooCommerce {
 	 * @since 3.3.0
 	 */
 	private function theme_support_includes() {
-		if ( wc_is_active_theme( array( 'twentynineteen', 'twentyseventeen', 'twentysixteen', 'twentyfifteen', 'twentyfourteen', 'twentythirteen', 'twentyeleven', 'twentytwelve', 'twentyten' ) ) ) {
+		if ( wc_is_active_theme( array( 'twentytwenty', 'twentynineteen', 'twentyseventeen', 'twentysixteen', 'twentyfifteen', 'twentyfourteen', 'twentythirteen', 'twentyeleven', 'twentytwelve', 'twentyten' ) ) ) {
 			switch ( get_template() ) {
 				case 'twentyten':
 					include_once WC_ABSPATH . 'includes/theme-support/class-wc-twenty-ten.php';
@@ -502,6 +502,9 @@ final class WooCommerce {
 				case 'twentynineteen':
 					include_once WC_ABSPATH . 'includes/theme-support/class-wc-twenty-nineteen.php';
 					break;
+				case 'twentytwenty':
+					include_once WC_ABSPATH . 'includes/theme-support/class-wc-twenty-twenty.php';
+					break;
 			}
 		}
 	}

includes/theme-support/class-wc-twenty-twenty.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * Twenty Twenty support.
+ *
+ * @since   3.8.1
+ * @package WooCommerce/Classes
+ */
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * WC_Twenty_Twenty class.
+ */
+class WC_Twenty_Twenty {
+
+	/**
+	 * Theme init.
+	 */
+	public static function init() {
+
+		// Change WooCommerce wrappers.
+		remove_action( 'woocommerce_before_main_content', 'woocommerce_output_content_wrapper', 10 );
+		remove_action( 'woocommerce_after_main_content', 'woocommerce_output_content_wrapper_end', 10 );
+
+		add_action( 'woocommerce_before_main_content', array( __CLASS__, 'output_content_wrapper' ), 10 );
+		add_action( 'woocommerce_after_main_content', array( __CLASS__, 'output_content_wrapper_end' ), 10 );
+
+		// This theme doesn't have a traditional sidebar.
+		remove_action( 'woocommerce_sidebar', 'woocommerce_get_sidebar', 10 );
+
+		// Enqueue theme compatibility styles.
+		add_filter( 'woocommerce_enqueue_styles', array( __CLASS__, 'enqueue_styles' ) );
+
+		// Register theme features.
+		add_theme_support( 'wc-product-gallery-zoom' );
+		add_theme_support( 'wc-product-gallery-lightbox' );
+		add_theme_support( 'wc-product-gallery-slider' );
+		add_theme_support(
+			'woocommerce',
+			array(
+				'thumbnail_image_width' => 300,
+				'single_image_width'    => 450,
+			)
+		);
+
+	}
+
+	/**
+	 * Open the Twenty Twenty wrapper.
+	 */
+	public static function output_content_wrapper() {
+		echo '<section id="primary" class="content-area">';
+		echo '<main id="main" class="site-main">';
+	}
+
+	/**
+	 * Close the Twenty Twenty wrapper.
+	 */
+	public static function output_content_wrapper_end() {
+		echo '</main>';
+		echo '</section>';
+	}
+
+	/**
+	 * Enqueue CSS for this theme.
+	 *
+	 * @param  array $styles Array of registered styles.
+	 * @return array
+	 */
+	public static function enqueue_styles( $styles ) {
+		unset( $styles['woocommerce-general'] );
+
+		$styles['woocommerce-general'] = array(
+			'src'     => str_replace( array( 'http:', 'https:' ), '', WC()->plugin_url() ) . '/assets/css/twenty-twenty.css',
+			'deps'    => '',
+			'version' => WC_VERSION,
+			'media'   => 'all',
+			'has_rtl' => true,
+		);
+
+		return apply_filters( 'woocommerce_twenty_twenty_styles', $styles );
+	}
+
+}
+
+WC_Twenty_Twenty::init();