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<?php
declare(strict_types=1);
namespace Automattic\WooCommerce\Blocks\BlockTypes;
use Automattic\WooCommerce\Admin\Features\Features;
use Automattic\WooCommerce\Blocks\Utils\StyleAttributesUtils;
/**
* CatalogSorting class.
*/
class AddToCartForm extends AbstractBlock {
/**
* Block name.
*
* @var string
*/
protected $block_name = 'add-to-cart-form';
/**
* Initializes the AddToCartForm block and hooks into the `wc_add_to_cart_message_html` filter
* to prevent displaying the Cart Notice when the block is inside the Single Product block
* and the Add to Cart button is clicked.
*
* It also hooks into the `woocommerce_add_to_cart_redirect` filter to prevent redirecting
* to another page when the block is inside the Single Product block and the Add to Cart button
* is clicked.
*
* @return void
*/
protected function initialize() {
parent::initialize();
add_filter( 'wc_add_to_cart_message_html', array( $this, 'add_to_cart_message_html_filter' ), 10, 2 );
add_filter( 'woocommerce_add_to_cart_redirect', array( $this, 'add_to_cart_redirect_filter' ), 10, 1 );
}
/**
* Get the block's attributes.
*
* @param array $attributes Block attributes. Default empty array.
* @return array Block attributes merged with defaults.
*/
private function parse_attributes( $attributes ) {
// These should match what's set in JS `registerBlockType`.
$defaults = array(
'isDescendentOfSingleProductBlock' => false,
'quantitySelectorStyle' => 'input',
);
return wp_parse_args( $attributes, $defaults );
}
/**
* Enqueue assets specific to this block.
* We enqueue frontend scripts only if the quantitySelectorStyle is set to 'stepper'.
*
* @param array $attributes Block attributes.
* @param string $content Block content.
* @param WP_Block $block Block instance.
*/
protected function enqueue_assets( $attributes, $content, $block ) {
if ( 'stepper' !== $attributes['quantitySelectorStyle'] ) {
return;
}
parent::enqueue_assets( $attributes, $content, $block );
}
/**
* Extra data passed through from server to client for block.
*
* @param array $attributes Any attributes that currently are available from the block.
* Note, this will be empty in the editor context when the block is
* not in the post content on editor load.
*/
protected function enqueue_data( array $attributes = [] ) {
parent::enqueue_data( $attributes );
$this->asset_data_registry->add( 'isStepperLayoutFeatureEnabled', Features::is_enabled( 'add-to-cart-with-options-stepper-layout' ) );
$this->asset_data_registry->add( 'isBlockifiedAddToCart', Features::is_enabled( 'blockified-add-to-cart' ) );
}
/**
* Add increment and decrement buttons to the quantity input field.
*
* @param string $product_html add-to-cart form HTML.
* @param string $product_name Product name.
* @return stringa add-to-cart form HTML with increment and decrement buttons.
*/
private function add_steppers( $product_html, $product_name ) {
// Regex pattern to match the <input> element with id starting with 'quantity_'.
$pattern = '/(<input[^>]*id="quantity_[^"]*"[^>]*\/>)/';
// Replacement string to add button BEFORE the matched <input> element.
/* translators: %s refers to the item name in the cart. */
$minus_button = '<button aria-label="' . esc_attr( sprintf( __( 'Reduce quantity of %s', 'woocommerce' ), $product_name ) ) . '"type="button" data-wc-on--click="actions.removeQuantity" class="wc-block-components-quantity-selector__button wc-block-components-quantity-selector__button--minus">-</button>$1';
// Replacement string to add button AFTER the matched <input> element.
/* translators: %s refers to the item name in the cart. */
$plus_button = '$1<button aria-label="' . esc_attr( sprintf( __( 'Increase quantity of %s', 'woocommerce' ), $product_name ) ) . '" type="button" data-wc-on--click="actions.addQuantity" class="wc-block-components-quantity-selector__button wc-block-components-quantity-selector__button--plus">+</button>';
$new_html = preg_replace( $pattern, $minus_button, $product_html );
$new_html = preg_replace( $pattern, $plus_button, $new_html );
return $new_html;
}
/**
* Add classes to the Add to Cart form input needed for the stepper style.
*
* @param string $product_html The Add to Cart form HTML.
*
* @return string The Add to Cart form HTML with classes added.
*/
private function add_stepper_classes_to_add_to_cart_form_input( $product_html ) {
$html = new \WP_HTML_Tag_Processor( $product_html );
// Add classes to the form.
while ( $html->next_tag( array( 'class_name' => 'quantity' ) ) ) {
$html->add_class( 'wc-block-components-quantity-selector' );
}
$html = new \WP_HTML_Tag_Processor( $html->get_updated_html() );
while ( $html->next_tag( array( 'class_name' => 'input-text' ) ) ) {
$html->add_class( 'wc-block-components-quantity-selector__input' );
}
return $html->get_updated_html();
}
/**
* 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 ) {
global $product;
$post_id = $block->context['postId'];
if ( ! isset( $post_id ) ) {
return '';
}
$previous_product = $product;
$product = wc_get_product( $post_id );
if ( ! $product instanceof \WC_Product ) {
$product = $previous_product;
return '';
}
$is_external_product_with_url = $product instanceof \WC_Product_External && $product->get_product_url();
$is_stepper_style = 'stepper' === $attributes['quantitySelectorStyle'] && ! $product->is_sold_individually() && Features::is_enabled( 'add-to-cart-with-options-stepper-layout' );
ob_start();
/**
* Trigger the single product add to cart action for each product type.
*
* @since 9.7.0
*/
do_action( 'woocommerce_' . $product->get_type() . '_add_to_cart' );
$product_html = ob_get_clean();
if ( ! $product_html ) {
$product = $previous_product;
return '';
}
$product_name = $product->get_name();
$product_html = $is_stepper_style ? $this->add_steppers( $product_html, $product_name ) : $product_html;
$parsed_attributes = $this->parse_attributes( $attributes );
$is_descendent_of_single_product_block = $parsed_attributes['isDescendentOfSingleProductBlock'];
if ( ! $is_external_product_with_url ) {
$product_html = $this->add_is_descendent_of_single_product_block_hidden_input_to_product_form( $product_html, $is_descendent_of_single_product_block );
}
$product_html = $is_stepper_style ? $this->add_stepper_classes_to_add_to_cart_form_input( $product_html ) : $product_html;
$classes_and_styles = StyleAttributesUtils::get_classes_and_styles_by_attributes( $attributes, array(), array( 'extra_classes' ) );
$product_classname = $is_descendent_of_single_product_block ? 'product' : '';
$classes = implode(
' ',
array_filter(
array(
'wp-block-add-to-cart-form wc-block-add-to-cart-form',
esc_attr( $classes_and_styles['classes'] ),
esc_attr( $product_classname ),
$is_stepper_style ? 'wc-block-add-to-cart-form--stepper' : 'wc-block-add-to-cart-form--input',
)
)
);
$wrapper_attributes = get_block_wrapper_attributes(
array(
'class' => $classes,
'style' => esc_attr( $classes_and_styles['styles'] ),
)
);
$form = sprintf(
'<div %1$s %2$s>%3$s</div>',
$wrapper_attributes,
$is_stepper_style ? 'data-wc-interactive=\'' . wp_json_encode(
array(
'namespace' => 'woocommerce/add-to-cart-form',
),
JSON_NUMERIC_CHECK | JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP
) . '\'' : '',
$product_html
);
$product = $previous_product;
return $form;
}
/**
* Add a hidden input to the Add to Cart form to indicate that it is a descendent of a Single Product block.
*
* @param string $product_html The Add to Cart Form HTML.
* @param string $is_descendent_of_single_product_block Indicates if block is descendent of Single Product block.
*
* @return string The Add to Cart Form HTML with the hidden input.
*/
protected function add_is_descendent_of_single_product_block_hidden_input_to_product_form( $product_html, $is_descendent_of_single_product_block ) {
$hidden_is_descendent_of_single_product_block_input = sprintf(
'<input type="hidden" name="is-descendent-of-single-product-block" value="%1$s">',
$is_descendent_of_single_product_block ? 'true' : 'false'
);
$regex_pattern = '/<button\s+type="submit"[^>]*>.*?<\/button>/i';
preg_match( $regex_pattern, $product_html, $input_matches );
if ( ! empty( $input_matches ) ) {
$product_html = preg_replace( $regex_pattern, $hidden_is_descendent_of_single_product_block_input . $input_matches[0], $product_html );
}
return $product_html;
}
/**
* Filter the add to cart message to prevent the Notice from being displayed when the Add to Cart form is a descendent of a Single Product block
* and the Add to Cart button is clicked.
*
* @param string $message Message to be displayed when product is added to the cart.
*/
public function add_to_cart_message_html_filter( $message ) {
// phpcs:ignore
if ( isset( $_POST['is-descendent-of-single-product-block'] ) && 'true' === $_POST['is-descendent-of-single-product-block'] ) {
return false;
}
return $message;
}
/**
* Hooks into the `woocommerce_add_to_cart_redirect` filter to prevent redirecting
* to another page when the block is inside the Single Product block and the Add to Cart button
* is clicked.
*
* @param string $url The URL to redirect to after the product is added to the cart.
* @return string The filtered redirect URL.
*/
public function add_to_cart_redirect_filter( $url ) {
// phpcs:ignore
if ( isset( $_POST['is-descendent-of-single-product-block'] ) && 'true' == $_POST['is-descendent-of-single-product-block'] ) {
if ( 'yes' === get_option( 'woocommerce_cart_redirect_after_add' ) ) {
return wc_get_cart_url();
}
return wp_validate_redirect( wp_get_referer(), $url );
}
return $url;
}
}