<?php

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/**

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* Contains the query functions for WooCommerce which alter the front-end post queries and loops

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*

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* @version 3.2.0

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* @package WooCommerce\Classes

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*/

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use Automattic\WooCommerce\Internal\ProductAttributesLookup\Filterer;

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use Automattic\WooCommerce\Enums\ProductStockStatus;

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defined( 'ABSPATH' ) || exit;

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/**

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* WC_Query Class.

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*/

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class WC_Query {

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/**

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* Query vars to add to wp.

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*

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* @var array

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*/

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public $query_vars = array();

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/**

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* Reference to the main product query on the page.

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*

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* @var WP_Query

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*/

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private static $product_query;

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/**

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* Stores chosen attributes.

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*

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* @var array

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*/

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private static $chosen_attributes;

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/**

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* The instance of the class that helps filtering with the product attributes lookup table.

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*

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* @var Filterer

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*/

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private $filterer;

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/**

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* Constructor for the query class. Hooks in methods.

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*/

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public function __construct() {

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$this->filterer = wc_get_container()->get( Filterer::class );

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add_action( 'init', array( $this, 'add_endpoints' ) );

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if ( ! is_admin() ) {

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add_action( 'wp_loaded', array( $this, 'get_errors' ), 20 );

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add_filter( 'query_vars', array( $this, 'add_query_vars' ), 0 );

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add_action( 'parse_request', array( $this, 'parse_request' ), 0 );

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add_action( 'pre_get_posts', array( $this, 'pre_get_posts' ) );

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add_filter( 'get_pagenum_link', array( $this, 'remove_add_to_cart_pagination' ), 10, 1 );

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}

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$this->init_query_vars();

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}

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/**

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* Reset the chosen attributes so that get_layered_nav_chosen_attributes will get them from the query again.

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*/

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public static function reset_chosen_attributes() {

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self::$chosen_attributes = null;

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}

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/**

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* Get any errors from querystring.

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*/

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public function get_errors() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$error = ! empty( $_GET['wc_error'] ) ? sanitize_text_field( wp_unslash( $_GET['wc_error'] ) ) : '';

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if ( $error && ! wc_has_notice( $error, 'error' ) ) {

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wc_add_notice( $error, 'error' );

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}

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}

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/**

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* Init query vars by loading options.

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*/

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public function init_query_vars() {

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// Query vars to add to WP.

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$this->query_vars = array(

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// Checkout actions.

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'order-pay' => get_option( 'woocommerce_checkout_pay_endpoint', 'order-pay' ),

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'order-received' => get_option( 'woocommerce_checkout_order_received_endpoint', 'order-received' ),

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// My account actions.

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'orders' => get_option( 'woocommerce_myaccount_orders_endpoint', 'orders' ),

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'view-order' => get_option( 'woocommerce_myaccount_view_order_endpoint', 'view-order' ),

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'downloads' => get_option( 'woocommerce_myaccount_downloads_endpoint', 'downloads' ),

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'edit-account' => get_option( 'woocommerce_myaccount_edit_account_endpoint', 'edit-account' ),

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'edit-address' => get_option( 'woocommerce_myaccount_edit_address_endpoint', 'edit-address' ),

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'payment-methods' => get_option( 'woocommerce_myaccount_payment_methods_endpoint', 'payment-methods' ),

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'lost-password' => get_option( 'woocommerce_myaccount_lost_password_endpoint', 'lost-password' ),

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'customer-logout' => get_option( 'woocommerce_logout_endpoint', 'customer-logout' ),

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'add-payment-method' => get_option( 'woocommerce_myaccount_add_payment_method_endpoint', 'add-payment-method' ),

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'delete-payment-method' => get_option( 'woocommerce_myaccount_delete_payment_method_endpoint', 'delete-payment-method' ),

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'set-default-payment-method' => get_option( 'woocommerce_myaccount_set_default_payment_method_endpoint', 'set-default-payment-method' ),

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);

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}

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/**

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* Get page title for an endpoint.

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*

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* @param string $endpoint Endpoint key.

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* @param string $action Optional action or variation within the endpoint.

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*

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* @since 2.3.0

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* @since 4.6.0 Added $action parameter.

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* @return string The page title.

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*/

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public function get_endpoint_title( $endpoint, $action = '' ) {

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global $wp;

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switch ( $endpoint ) {

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case 'order-pay':

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$title = __( 'Pay for order', 'woocommerce' );

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break;

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case 'order-received':

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$title = __( 'Order received', 'woocommerce' );

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break;

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case 'orders':

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if ( ! empty( $wp->query_vars['orders'] ) ) {

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/* translators: %s: page */

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$title = sprintf( __( 'Orders (page %d)', 'woocommerce' ), intval( $wp->query_vars['orders'] ) );

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} else {

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$title = __( 'Orders', 'woocommerce' );

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}

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break;

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case 'view-order':

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$order = wc_get_order( $wp->query_vars['view-order'] );

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/* translators: %s: order number */

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$title = ( $order ) ? sprintf( __( 'Order #%s', 'woocommerce' ), $order->get_order_number() ) : '';

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break;

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case 'downloads':

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$title = __( 'Downloads', 'woocommerce' );

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break;

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case 'edit-account':

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$title = __( 'Account details', 'woocommerce' );

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break;

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case 'edit-address':

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$title = __( 'Addresses', 'woocommerce' );

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break;

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case 'payment-methods':

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$title = __( 'Payment methods', 'woocommerce' );

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break;

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case 'add-payment-method':

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$title = __( 'Add payment method', 'woocommerce' );

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break;

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case 'lost-password':

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if ( in_array( $action, array( 'rp', 'resetpass', 'newaccount' ), true ) ) {

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$title = __( 'Set password', 'woocommerce' );

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} else {

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$title = __( 'Lost password', 'woocommerce' );

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}

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break;

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default:

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$title = '';

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break;

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}

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/**

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* Filters the page title used for my-account endpoints.

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*

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* @since 2.6.0

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* @since 4.6.0 Added $action parameter.

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*

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* @see get_endpoint_title()

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*

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* @param string $title Default title.

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* @param string $endpoint Endpoint key.

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* @param string $action Optional action or variation within the endpoint.

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*/

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return apply_filters( 'woocommerce_endpoint_' . $endpoint . '_title', $title, $endpoint, $action );

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}

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/**

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* Endpoint mask describing the places the endpoint should be added.

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*

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* @since 2.6.2

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* @return int

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*/

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public function get_endpoints_mask() {

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if ( 'page' === get_option( 'show_on_front' ) ) {

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$page_on_front = get_option( 'page_on_front' );

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$myaccount_page_id = get_option( 'woocommerce_myaccount_page_id' );

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$checkout_page_id = get_option( 'woocommerce_checkout_page_id' );

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if ( in_array( $page_on_front, array( $myaccount_page_id, $checkout_page_id ), true ) ) {

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return EP_ROOT | EP_PAGES;

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}

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}

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return EP_PAGES;

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}

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/**

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* Add endpoints for query vars.

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*/

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public function add_endpoints() {

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$mask = $this->get_endpoints_mask();

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foreach ( $this->get_query_vars() as $key => $var ) {

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if ( ! empty( $var ) ) {

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add_rewrite_endpoint( $var, $mask );

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}

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}

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}

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/**

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* Add query vars.

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*

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* @param array $vars Query vars.

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* @return array

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*/

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public function add_query_vars( $vars ) {

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foreach ( $this->get_query_vars() as $key => $var ) {

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$vars[] = $key;

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}

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return $vars;

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}

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/**

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* Get query vars.

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*

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* @return array

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*/

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public function get_query_vars() {

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return apply_filters( 'woocommerce_get_query_vars', $this->query_vars );

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}

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/**

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* Get query current active query var.

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*

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* @return string

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*/

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public function get_current_endpoint() {

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global $wp;

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foreach ( $this->get_query_vars() as $key => $value ) {

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if ( isset( $wp->query_vars[ $key ] ) ) {

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return $key;

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}

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}

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return '';

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}

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/**

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* Parse the request and look for query vars - endpoints may not be supported.

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*/

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public function parse_request() {

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global $wp;

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// phpcs:disable WordPress.Security.NonceVerification.Recommended

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// Map query vars to their keys, or get them if endpoints are not supported.

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foreach ( $this->get_query_vars() as $key => $var ) {

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if ( isset( $_GET[ $var ] ) ) {

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$wp->query_vars[ $key ] = sanitize_text_field( wp_unslash( $_GET[ $var ] ) );

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} elseif ( isset( $wp->query_vars[ $var ] ) ) {

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$wp->query_vars[ $key ] = $wp->query_vars[ $var ];

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}

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}

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// phpcs:enable WordPress.Security.NonceVerification.Recommended

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}

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/**

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* Are we currently on the front page?

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*

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* @param WP_Query $q Query instance.

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* @return bool

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*/

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private function is_showing_page_on_front( $q ) {

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return ( $q->is_home() && ! $q->is_posts_page ) && 'page' === get_option( 'show_on_front' );

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}

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/**

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* Is the front page a page we define?

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*

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* @param int $page_id Page ID.

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* @return bool

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*/

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private function page_on_front_is( $page_id ) {

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return absint( get_option( 'page_on_front' ) ) === absint( $page_id );

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}

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/**

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* Returns a copy of `$query` with all query vars that are allowed on the front page stripped.

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* Used when the shop page is also the front page.

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*

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* @param array $query The unfiltered array.

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* @return array The filtered query vars.

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*/

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private function filter_out_valid_front_page_query_vars( $query ) {

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return array_filter(

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$query,

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function ( $key ) {

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return ! $this->is_query_var_valid_on_front_page( $key );

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},

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ARRAY_FILTER_USE_KEY

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);

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}

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/**

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* Checks whether a query var is allowed on the front page or not.

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*

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* @param string $query_var Query var name.

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* @return boolean TRUE when query var is allowed on the front page. FALSE otherwise.

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*/

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private function is_query_var_valid_on_front_page( $query_var ) {

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return in_array( $query_var, array( 'preview', 'page', 'paged', 'cpage', 'orderby' ), true )

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|| in_array( $query_var, array( 'min_price', 'max_price', 'rating_filter' ), true )

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|| 0 === strpos( $query_var, 'filter_' )

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|| 0 === strpos( $query_var, 'query_type_' );

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}

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/**

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* Hook into pre_get_posts to do the main product query.

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*

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* @param WP_Query $q Query instance.

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*/

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public function pre_get_posts( $q ) {

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// We only want to affect the main query.

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if ( ! $q->is_main_query() ) {

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return;

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}

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// Fixes for queries on static homepages.

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if ( $this->is_showing_page_on_front( $q ) ) {

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// Fix for endpoints on the homepage.

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if ( ! $this->page_on_front_is( $q->get( 'page_id' ) ) ) {

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$_query = wp_parse_args( $q->query );

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if ( ! empty( $_query ) && array_intersect( array_keys( $_query ), array_keys( $this->get_query_vars() ) ) ) {

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$q->is_page = true;

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$q->is_home = false;

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$q->is_singular = true;

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$q->set( 'page_id', (int) get_option( 'page_on_front' ) );

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add_filter( 'redirect_canonical', '__return_false' );

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}

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}

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// When orderby is set, WordPress shows posts on the front-page. Get around that here.

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if ( $this->page_on_front_is( wc_get_page_id( 'shop' ) ) ) {

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$_query = $this->filter_out_valid_front_page_query_vars( wp_parse_args( $q->query ) );

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if ( empty( $_query ) ) {

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$q->set( 'page_id', (int) get_option( 'page_on_front' ) );

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$q->is_page = true;

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$q->is_home = false;

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// WP supporting themes show post type archive.

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if ( wc_current_theme_supports_woocommerce_or_fse() ) {

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$q->set( 'post_type', 'product' );

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} else {

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$q->is_singular = true;

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}

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}

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} elseif ( ! empty( $_GET['orderby'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$q->set( 'page_id', (int) get_option( 'page_on_front' ) );

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$q->is_page = true;

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$q->is_home = false;

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$q->is_singular = true;

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}

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}

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// Fix product feeds.

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if ( $q->is_feed() && $q->is_post_type_archive( 'product' ) ) {

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$q->is_comment_feed = false;

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}

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// Special check for shops with the PRODUCT POST TYPE ARCHIVE on front.

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if ( wc_current_theme_supports_woocommerce_or_fse() && $q->is_page() && 'page' === get_option( 'show_on_front' ) && absint( $q->get( 'page_id' ) ) === wc_get_page_id( 'shop' ) ) {

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// This is a front-page shop.

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$q->set( 'post_type', 'product' );

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$q->set( 'page_id', '' );

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if ( isset( $q->query['paged'] ) ) {

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$q->set( 'paged', $q->query['paged'] );

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}

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// Define a variable so we know this is the front page shop later on.

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wc_maybe_define_constant( 'SHOP_IS_ON_FRONT', true );

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// Get the actual WP page to avoid errors and let us use is_front_page().

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// This is hacky but works. Awaiting https://core.trac.wordpress.org/ticket/21096.

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global $wp_post_types;

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$shop_page = get_post( wc_get_page_id( 'shop' ) );

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$wp_post_types['product']->ID = $shop_page->ID;

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$wp_post_types['product']->post_title = $shop_page->post_title;

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$wp_post_types['product']->post_name = $shop_page->post_name;

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$wp_post_types['product']->post_type = $shop_page->post_type;

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$wp_post_types['product']->ancestors = get_ancestors( $shop_page->ID, $shop_page->post_type );

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// Fix conditional Functions like is_front_page.

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$q->is_singular = false;

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$q->is_post_type_archive = true;

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$q->is_archive = true;

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$q->is_page = true;

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// Remove post type archive name from front page title tag.

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add_filter( 'post_type_archive_title', '__return_empty_string', 5 );

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// Fix WP SEO.

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if ( class_exists( 'WPSEO_Meta' ) ) {

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add_filter( 'wpseo_metadesc', array( $this, 'wpseo_metadesc' ) );

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add_filter( 'wpseo_metakey', array( $this, 'wpseo_metakey' ) );

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}

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} elseif ( ! $q->is_post_type_archive( 'product' ) && ! $q->is_tax( get_object_taxonomies( 'product' ) ) ) {

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// Only apply to product categories, the product post archive, the shop page, product tags, and product attribute taxonomies.

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return;

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}

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$this->product_query( $q );

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}

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/**

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* Handler for the 'the_posts' WP filter.

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*

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* @param array $posts Posts from WP Query.

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* @param WP_Query $query Current query.

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*

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* @return array

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*/

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public function handle_get_posts( $posts, $query ) {

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if ( 'product_query' !== $query->get( 'wc_query' ) ) {

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return $posts;

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}

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$this->remove_product_query_filters( $posts );

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return $posts;

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}

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[437] Fix | Delete

[438] Fix | Delete

/**

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* Pre_get_posts above may adjust the main query to add WooCommerce logic. When this query is done, we need to ensure

[440] Fix | Delete

* all custom filters are removed.

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*

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* This is done here during the_posts filter. The input is not changed.

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*

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* @param array $posts Posts from WP Query.

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* @return array

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*/

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public function remove_product_query_filters( $posts ) {

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$this->remove_ordering_args();

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remove_filter( 'posts_clauses', array( $this, 'price_filter_post_clauses' ), 10, 2 );

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return $posts;

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}

[452] Fix | Delete

[453] Fix | Delete

/**

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* This function used to be hooked to found_posts and adjust the posts count when the filtering by attribute

[455] Fix | Delete

* widget was used and variable products were present. Now it isn't hooked anymore and does nothing but return

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* the input unchanged, since the pull request in which it was introduced has been reverted.

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*

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* @since 4.4.0

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* @param int $count Original posts count, as supplied by the found_posts filter.

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* @param WP_Query $query The current WP_Query object.

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*

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* @return int Adjusted posts count.

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*/

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public function adjust_posts_count( $count, $query ) {

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return $count;

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}

[467] Fix | Delete

[468] Fix | Delete

/**

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* Instance version of get_layered_nav_chosen_attributes, needed for unit tests.

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*

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* @return array

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*/

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protected function get_layered_nav_chosen_attributes_inst() {

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return self::get_layered_nav_chosen_attributes();

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}

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[477] Fix | Delete

/**

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* Get the posts (or the ids of the posts) found in the current WP loop.

[479] Fix | Delete

*

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* @return array Array of posts or post ids.

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*/

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protected function get_current_posts() {

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return $GLOBALS['wp_query']->posts;

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}

[485] Fix | Delete

[486] Fix | Delete

/**

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* WP SEO meta description.

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*

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* Hooked into wpseo_ hook already, so no need for function_exist.

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*

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* @return string

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*/

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public function wpseo_metadesc() {

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return WPSEO_Meta::get_value( 'metadesc', wc_get_page_id( 'shop' ) );

[495] Fix | Delete

}

[496] Fix | Delete

[497] Fix | Delete

/**

[498] Fix | Delete

* WP SEO meta key.

[499] Fix | Delete