[Experimental] Allow overriding placeholder in interactivity Dropdown::render (#43211)

* add: multiple select support to attribute dropdown
* fix: remove active filter from dropdown
* chore: remove unused extractBuiltinColor

---------
Co-authored-by: Tung Du <dinhtungdu@gmail.com>

plugins/woocommerce-blocks/assets/js/blocks/collection-filters/inner-blocks/attribute-filter/components/attribute-dropdown.tsx

@@ -11,7 +11,6 @@ import { PreviewDropdown } from '../../components/preview-dropdown';
 
 type Props = {
 	label: string;
-	textColor: string;
 };
 
 export const AttributeDropdown = ( { label }: Props ) => {

plugins/woocommerce-blocks/assets/js/blocks/collection-filters/inner-blocks/attribute-filter/edit.tsx

@@ -41,8 +41,6 @@ import { Inspector } from './components/inspector-controls';
 import { AttributeCheckboxList } from './components/attribute-checkbox-list';
 import { AttributeDropdown } from './components/attribute-dropdown';
 import './style.scss';
-import { extractBuiltInColor } from '../../utils';
-import { useStyleProps } from '../../../../base/hooks';
 
 const ATTRIBUTES = getSetting< AttributeSetting[] >( 'attributes', [] );
 
@@ -62,13 +60,6 @@ const Edit = ( props: EditProps ) => {
 		showCounts,
 	} = blockAttributes;
 
-	const { className, style } = useStyleProps( props.attributes );
-	const builtInColor = extractBuiltInColor( className );
-
-	const textColor = builtInColor
-		? `var(--wp--preset--color--${ builtInColor })`
-		: style.color;
-
 	const attributeObject = getAttributeFromId( attributeId );
 
 	const [ isEditing, setIsEditing ] = useState(
@@ -267,7 +258,6 @@ const Edit = ( props: EditProps ) => {
 							attributeObject.label ||
 							__( 'attribute', 'woocommerce' )
 						}
-						textColor={ textColor || '' }
 					/>
 				) : (
 					<AttributeCheckboxList

plugins/woocommerce-blocks/assets/js/blocks/collection-filters/inner-blocks/attribute-filter/frontend.ts

@@ -15,6 +15,10 @@ interface ActiveAttributeFilterContext extends AttributeFilterContext {
 	value: string;
 }
 
+function nonNullable< T >( value: T ): value is NonNullable< T > {
+	return value !== null && value !== undefined;
+}
+
 function getUrl(
 	selectedTerms: string[],
 	slug: string,
@@ -47,18 +51,14 @@ store( 'woocommerce/collection-attribute-filter', {
 			const dropdownContext = getContext< DropdownContext >(
 				'woocommerce/interactivity-dropdown'
 			);
-
 			const context = getContext< AttributeFilterContext >();
+			const filters = dropdownContext.selectedItems
+				.map( ( item ) => item.value )
+				.filter( nonNullable );
 
-			if ( dropdownContext.selectedItem.value ) {
+			navigate(
-				navigate(
+				getUrl( filters, context.attributeSlug, context.queryType )
-					getUrl(
+			);
-						[ dropdownContext.selectedItem.value ],
-						context.attributeSlug,
-						context.queryType
-					)
-				);
-			}
 		},
 		updateProducts: ( event: HTMLElementEvent< HTMLInputElement > ) => {
 			if ( ! event.target.value ) return;

plugins/woocommerce-blocks/assets/js/blocks/collection-filters/utils.ts

@@ -1,12 +0,0 @@
-/**
- * Extracts the built-in color from a block class name string if it exists.
- * Returns null if no built-in color is found.
- *
- * @param  blockClassString The block class name string.
- * @return {string|null} The color name or null if no built-in color is found.
- */
-export const extractBuiltInColor = ( blockClassString: string ) => {
-	const regex = /has-(?!link|text|background)([a-z-]+)-color/;
-	const match = blockClassString.match( regex );
-	return match ? match[ 1 ] : null;
-};

plugins/woocommerce-blocks/packages/interactivity-components/dropdown/index.ts

@@ -2,7 +2,6 @@
  * External dependencies
  */
 import { getContext, store } from '@woocommerce/interactivity';
-import { __ } from '@wordpress/i18n';
 
 /**
  * Internal dependencies
@@ -11,6 +10,7 @@ import './style.scss';
 
 export type DropdownContext = {
 	selectType: 'multiple' | 'single';
+	defaultPlaceholder: string;
 	item: {
 		label: string;
 		value: string;
@@ -42,18 +42,18 @@ type DropdownStore = {
 store< DropdownStore >( 'woocommerce/interactivity-dropdown', {
 	state: {
 		get placeholderText(): string {
-			const { selectType, selectedItems } =
+			const { selectType, selectedItems, defaultPlaceholder } =
 				getContext< DropdownContext >();
 
 			if ( selectType === 'single' ) {
 				return selectedItems?.length && selectedItems[ 0 ].label
 					? selectedItems[ 0 ]?.label
-					: __( 'Select an option', 'woocommerce' );
+					: defaultPlaceholder;
 			} else if (
 				selectType === 'multiple' &&
 				selectedItems.length === 0
 			) {
-				return __( 'Select options', 'woocommerce' );
+				return defaultPlaceholder;
 			}
 
 			return '';

plugins/woocommerce/changelog/43211-dev-placeholder-override

@@ -0,0 +1,4 @@
+Significance: patch
+Type: add
+
+[Experimental] support passing a placeholder text to the interactivity Dropdown component.

plugins/woocommerce/src/Blocks/BlockTypes/CollectionAttributeFilter.php

@@ -211,8 +211,10 @@ final class CollectionAttributeFilter extends AbstractBlock {
 			return '';
 		}
 
-		$list_items    = array();
+		$list_items     = array();
-		$selected_item = array();
+		$selected_items = array();
+
+		$product_attribute = wc_get_attribute( $attributes['attributeId'] );
 
 		foreach ( $options as $option ) {
 			$item = array(
@@ -223,7 +225,7 @@ final class CollectionAttributeFilter extends AbstractBlock {
 			$list_items[] = $item;
 
 			if ( $option['selected'] ) {
-				$selected_item = $item;
+				$selected_items[] = $item;
 			}
 		}
 
@@ -231,7 +233,10 @@ final class CollectionAttributeFilter extends AbstractBlock {
 			array(
 				'items'          => $list_items,
 				'action'         => 'woocommerce/collection-attribute-filter::actions.navigate',
-				'selected_items' => array( $selected_item ),
+				'selected_items' => $selected_items,
+				'select_type'    => $attributes['selectType'] ?? 'multiple',
+				// translators: %s is a product attribute name.
+				'placeholder'    => sprintf( __( 'Select %s', 'woocommerce' ), $product_attribute->name ),
 			)
 		);
 	}

plugins/woocommerce/src/Blocks/BlockTypes/CollectionRatingFilter.php

@@ -222,7 +222,8 @@ final class CollectionRatingFilter extends AbstractBlock {
 	 * @return array<array-key, array>
 	 */
 	private function get_dropdown_props( $rating_counts, $selected_ratings_query, $show_counts, $select_type ) {
-		$ratings_array = explode( ',', $selected_ratings_query );
+		$ratings_array    = explode( ',', $selected_ratings_query );
+		$placeholder_text = 'single' === $select_type ? __( 'Select a rating', 'woocommerce' ) : __( 'Select ratings', 'woocommerce' );
 
 		$selected_items = array_reduce(
 			$rating_counts,
@@ -259,6 +260,7 @@ final class CollectionRatingFilter extends AbstractBlock {
 			'select_type'    => $select_type,
 			'selected_items' => $selected_items,
 			'action'         => 'woocommerce/collection-rating-filter::actions.onDropdownChange',
+			'placeholder'    => $placeholder_text,
 		);
 	}
 }

plugins/woocommerce/src/Blocks/BlockTypes/CollectionStockFilter.php

@@ -151,6 +151,8 @@ final class CollectionStockFilter extends AbstractBlock {
 		$select_type    = $attributes['selectType'] ?? 'single';
 		$stock_statuses = wc_get_product_stock_status_options();
 
+		$placeholder_text = 'single' === $select_type ? __( 'Select stock status', 'woocommerce' ) : __( 'Select stock statuses', 'woocommerce' );
+
 		// check the url params to select initial item on page load.
 		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Nonce verification is not required here.
 		$query                   = isset( $_GET[ self::STOCK_STATUS_QUERY_VAR ] ) ? sanitize_text_field( wp_unslash( $_GET[ self::STOCK_STATUS_QUERY_VAR ] ) ) : '';
@@ -236,6 +238,7 @@ final class CollectionStockFilter extends AbstractBlock {
 						'action'         => 'woocommerce/collection-stock-filter::actions.navigate',
 						'selected_items' => $selected_items,
 						'select_type'    => $select_type,
+						'placeholder'    => $placeholder_text,
 					)
 				);
 				?>

plugins/woocommerce/src/Blocks/InteractivityComponents/Dropdown.php

@@ -24,15 +24,18 @@ class Dropdown {
 		// Items should be an array of objects with a label and value property.
 		$items = $props['items'] ?? array();
 
+		$default_placeholder = 'single' === $select_type ? __( 'Select an option', 'woocommerce' ) : __( 'Select options', 'woocommerce' );
+		$placeholder         = $props['placeholder'] ?? $default_placeholder;
+
 		$dropdown_context = array(
-			'selectedItems' => $selected_items,
+			'selectedItems'      => $selected_items,
-			'isOpen'        => false,
+			'isOpen'             => false,
-			'selectType'    => $select_type,
+			'selectType'         => $select_type,
+			'defaultPlaceholder' => $placeholder,
 		);
 
-		$action              = $props['action'] ?? '';
+		$action    = $props['action'] ?? '';
-		$namespace           = wp_json_encode( array( 'namespace' => 'woocommerce/interactivity-dropdown' ) );
+		$namespace = wp_json_encode( array( 'namespace' => 'woocommerce/interactivity-dropdown' ) );
-		$default_placeholder = 'single' === $select_type ? __( 'Select an option', 'woocommerce' ) : __( 'Select options', 'woocommerce' );
 
 		ob_start();
 		?>
@@ -41,7 +44,7 @@ class Dropdown {
 				<div class="wc-interactivity-dropdown__dropdown" tabindex="-1" >
 					<div class="wc-interactivity-dropdown__dropdown-selection" id="options-dropdown" tabindex="0" aria-haspopup="listbox">
 						<span class="wc-interactivity-dropdown__placeholder" data-wc-text="state.placeholderText">
-							<?php echo esc_html( $default_placeholder ); ?>
+							<?php echo esc_html( $placeholder ); ?>
 						</span>
 						<?php if ( 'multiple' === $select_type ) { ?>
 							<div class="selected-options">
@@ -53,6 +56,7 @@ class Dropdown {
 											<span class="wc-interactivity-dropdown__badge-text" data-wc-text="context.item.label"></span>
 											<svg
 												data-wc-on--click="actions.unselectDropdownItem"
+												data-wc-on--click--parent-action="<?php echo esc_attr( $action ); ?>"
 												class="wc-interactivity-dropdown__badge-remove"
 												width="24"
 												height="24"
@@ -68,12 +72,13 @@ class Dropdown {
 								<?php foreach ( $selected_items as $selected ) { ?>
 									<div
 										class="wc-interactivity-dropdown__selected-badge"
-										data-wc-key="<?php echo esc_attr( $selected['label'] ); ?>"
+										data-wc-key="<?php echo esc_attr( $selected['value'] ); ?>"
 										data-wc-each-child
 									>
 											<span class="wc-interactivity-dropdown__badge-text"><?php echo esc_html( $selected['label'] ); ?></span>
 											<svg
 												data-wc-on--click="actions.unselectDropdownItem"
+												data-wc-on--click--parent-action="<?php echo esc_attr( $action ); ?>"
 												class="wc-interactivity-dropdown__badge-remove"
 												width="24"
 												height="24"