newsupernova/vendor/magento/module-braintree/Observer/AddPaypalShortcuts.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Braintree\Observer;

use Magento\Framework\Event\Observer;
use Magento\Catalog\Block\ShortcutButtons;
use Magento\Framework\Event\ObserverInterface;

/**
 * Class AddPaypalShortcuts
 */
class AddPaypalShortcuts implements ObserverInterface
{
    /**
     * Block class
     */
    const PAYPAL_SHORTCUT_BLOCK = \Magento\Braintree\Block\Paypal\Button::class;

    /**
     * Add Braintree PayPal shortcut buttons
     *
     * @param Observer $observer
     * @return void
     */
    public function execute(Observer $observer)
    {
        // Remove button from catalog pages
        if ($observer->getData('is_catalog_product')) {
            return;
        }

        /** @var ShortcutButtons $shortcutButtons */
        $shortcutButtons = $observer->getEvent()->getContainer();

        $shortcut = $shortcutButtons->getLayout()->createBlock(self::PAYPAL_SHORTCUT_BLOCK);

        $shortcutButtons->addShortcut($shortcut);
    }
}