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编辑当前文件:/home/paymbalq/www/wp-content/plugins/woocommerce/src/Blocks/BlockTypes/AddToCartForm.php

<?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';

/**
	 * 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(
			'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 '';
		}

$is_descendent_of_single_product_block = is_null( $product ) || $post_id !== $product->get_id();

$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' );

if ( $is_descendent_of_single_product_block ) {
			add_filter( 'woocommerce_add_to_cart_form_action', array( $this, 'add_to_cart_form_action' ), 10 );
		}

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 ( $is_descendent_of_single_product_block ) {
			remove_filter( 'woocommerce_add_to_cart_form_action', array( $this, 'add_to_cart_form_action' ), 10 );
		}

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 );
		$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;
	}

/**
	 * Use current url as the add to cart form action.
	 *
	 * @return string The current URL.
	 */
	public function add_to_cart_form_action() {
		global $wp;
		return home_url( add_query_arg( $_GET, $wp->request ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	}
}