<?php
/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

// @codingStandardsIgnoreFile

/** @var \Magento\Catalog\Block\Adminhtml\Product\Edit\Js $block */
?>
<script>
require([
    "jquery",
    "prototype",
    "mage/backend/tabs"
], function(jQuery){

//<![CDATA[
Event.observe(window, 'load', recalculateTax);
Event.observe(window, 'load', registerTaxRecalcs);

function registerTaxRecalcs() {
    if (typeof dynamicTaxes == 'undefined') {
        return;
    }

    for (var i = 0; i < dynamicTaxes.length; i++) {
        Event.observe($(dynamicTaxes[i]), 'change', recalculateTax);
    }
    Event.observe($('tax_class_id'), 'change', recalculateTax);
}

var priceFormat = <?php /* @escapeNotVerified */ echo $this->helper('Magento\Tax\Helper\Data')->getPriceFormat($block->getStore()); ?>;
var taxRates = <?php /* @escapeNotVerified */ echo $block->getAllRatesByProductClassJson(); ?>;

function recalculateTax() {
    if (typeof dynamicTaxes == 'undefined') {
        return;
    }

    for (var i = 0; i < dynamicTaxes.length; i++) {
        var code = dynamicTaxes[i];
        var span = $('dynamic-tax-' + code);
        var input = $(code);

        if (!input.value) {
            span.innerHTML = '';
            continue;
        }

        var rate = 0,
            taxClass = $('tax_class_id').options[$('tax_class_id').selectedIndex].value,
            value = taxRates['value_' + taxClass];

        if (value != undefined) {
            rate = value;
        }

        var spanValue = '';
        if (rate != 0) {
            spanValue = ' ' + formatCurrency(input.value / (100 + rate) * rate, priceFormat);
        }
        span.innerHTML = spanValue;
    }
}

// Bind tab changes
function bindActiveProductTab(event, ui) {
    var anchor = jQuery(ui.newTab).find('a');
    if (anchor && anchor.name && $('store_switcher')) {
        $('store_switcher').switchParams = 'active_tab/' + anchor.name + '/';
    }
}
//varienGlobalEvents.attachEventHandler('showTab', bindActiveProductTab);
jQuery(document).on('tabsactivate', bindActiveProductTab);

// bind active tab
<?php if ($tabsBlock = $block->getLayout()->getBlock('product_tabs')): ?>
jQuery(function () {
    if (jQuery('#<?php /* @escapeNotVerified */ echo $tabsBlock->getId() ?>').length && jQuery('#<?php /* @escapeNotVerified */ echo $tabsBlock->getId() ?>').is(':mage-tabs')) {
        var activeAnchor = jQuery('#<?php /* @escapeNotVerified */ echo $tabsBlock->getId() ?>').tabs('activeAnchor');
        if (activeAnchor && $('store_switcher')) {
            $('store_switcher').switchParams = 'active_tab/' + activeAnchor.prop('name') + '/';
        }
    }
});
<?php endif; ?>

window.recalculateTax = recalculateTax;
window.bindActiveProductTab = bindActiveProductTab;
window.registerTaxRecalcs = registerTaxRecalcs;
//]]>

});
</script>
