File modules/menu-cart.php

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<?php

namespace SIW\Modules;

use SIW\Elements;

/**
 * Voegt cart toe aan menu
 *
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Menu_Cart {

    /**
     * Menu-locaties
     *
     * @var array
     * 
     * @todo verplaatsen naar configuratie
     */
    protected $menu_locations = [
        'primary_navigation',
        'mobile_navigation'
    ];

    /**
     * Init
     */
    public static function init() {
        $self = new self();
        add_filter( 'wp_nav_menu_items', [ $self, 'add_cart_to_menu'], 10, 2 );
        add_filter( 'woocommerce_add_to_cart_fragments', [ $self, 'update_cart'] );
        add_action( 'wp_enqueue_scripts', [ $self, 'enqueue_scripts' ], PHP_INT_MAX );
    }

    /**
     * Voegt cart toe aan menu
     *
     * @param string $items
     * @param \stdClass $args
     * @return string
     */
    public function add_cart_to_menu( string $items, \stdClass $args ) {
        if ( ! in_array( $args->theme_location, $this->menu_locations ) ) {
            return $items;
        }
        $items .= '<li class="menu-item menu-cart">' . $this->render_cart() . '</li>';
        return $items;
    }

    /**
     * Rendert cart
     */
    protected function render_cart() {
        $cart_count = WC()->cart->get_cart_contents_count();
        ob_start();
        ?>
        <a class="siw-cart" href="<?php echo wc_get_cart_url(); ?>" title="<?php esc_attr_e( 'Winkelmand', 'siw') ?>">
            <span class="hidden-sm hidden-md hidden-lg"><?php esc_html_e( 'Je winkelmand', 'siw' );?></span>
            <?php echo Elements::generate_icon( 'siw-icon-suitcase');?>
            <span class="siw-cart-count"><?php echo $cart_count; ?></span>
        </a>
        <?php
        return ob_get_clean();
    }

    /**
     * Werkt cart bij 
     *
     * @param array $fragments
     * @return array
     */
    public function update_cart( array $fragments ) {
        $cart_count = WC()->cart->get_cart_contents_count();
        $fragments['span.siw-cart-count'] = '<span class="siw-cart-count">' . $cart_count . '</span>';
        return $fragments;
    }

    /**
     * Voegt scripts toe
     */
    public function enqueue_scripts() {
        wp_register_script( 'siw-menu-cart', SIW_ASSETS_URL . 'js/modules/siw-menu-cart.js', [ 'jquery', 'js-cookie' ] , SIW_PLUGIN_VERSION, true );
        wp_enqueue_script( 'siw-menu-cart' );
    }

}

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