excelexporter.php

<?php
 
namespace Bitrix\Main\Grid\Export;
 
use Bitrix\Main\Context;
use Bitrix\Main\Grid\Component\ComponentParams;
use Bitrix\Main\Grid\Grid;
use Bitrix\Main\Grid\Settings;
use Bitrix\Main\HttpRequest;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Web\Uri;
use Bitrix\UI\Buttons\BaseButton;
 
final class ExcelExporter
{
    public const REQUEST_PARAM_NAME = 'mode';
    public const REQUEST_PARAM_VALUE = 'excel';
 
    public function isExportRequest(?HttpRequest $request = null): bool
    {
        $request ??= Context::getCurrent()->getRequest();
 
        return $request->get(self::REQUEST_PARAM_NAME) === self::REQUEST_PARAM_VALUE;
    }
 
    public function getControl(?HttpRequest $request = null): BaseButton
    {
        $request ??= Context::getCurrent()->getRequest();
 
        $uri = new Uri($request->getRequestUri());
        $uri->addParams([
            self::REQUEST_PARAM_NAME => self::REQUEST_PARAM_VALUE,
            // for disable composite
            'ncc' => 1,
        ]);
 
        $button = new BaseButton();
        $button->setLink((string)$uri);
        $button->setText(Loc::getMessage('MAIN_GRID_EXPORT_EXCEL_BUTTON_TEXT'));
 
        return $button;
    }
 
    public function process(Grid $grid, string $fileName = 'export'): void
    {
        global $APPLICATION;
 
        $APPLICATION->RestartBuffer();
 
        $grid->getSettings()->setMode(Settings::MODE_EXCEL);
 
        try
        {
            ob_start();
            $APPLICATION->IncludeComponent(
                'bitrix:main.ui.grid',
                'excel',
                ComponentParams::get($grid)
            );
            $content = ob_get_contents();
        }
        finally
        {
            ob_end_clean();
        }
 
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: filename="' . $fileName . '.xls"');
 
        echo $content;
 
        die();
    }
}