<?php
namespace Shopkeeper\VendorNotes\Block\Adminhtml\Form\Field;

use Magento\Config\Block\System\Config\Form\Field\FieldArray\AbstractFieldArray;
use Magento\Framework\DataObject;

class VendorMapping extends AbstractFieldArray
{
    /**
     * Prepare rendering the new field by adding all the needed columns
     */
    protected function _prepareToRender()
    {
        $this->addColumn('vendor_name', [
            'label' => __('Vendor Name'),
            'class' => 'required-entry',
            'style' => 'width:200px'
        ]);
        
        $this->addColumn('note', [
            'label' => __('Note'),
            'class' => 'required-entry',
            'style' => 'width:400px'
        ]);
        
        $this->_addAfter = false;
        $this->_addButtonLabel = __('Add Vendor Note');
    }

    /**
     * Prepare existing row data object
     *
     * @param DataObject $row
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    protected function _prepareArrayRow(DataObject $row): void
    {
        $options = [];
        $row->setData('option_extra_attrs', $options);
    }
}