groupaction.php

См. документацию.

<?php
 
namespace Bitrix\Main\Grid\Panel\Action;
 
use Bitrix\Main\Filter\Filter;
use Bitrix\Main\Grid\Panel\Action\Group\GroupChildAction;
use Bitrix\Main\Grid\Panel\Actions;
use Bitrix\Main\Grid\Panel\Types;
use Bitrix\Main\HttpRequest;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Result;
 
abstract class GroupAction implements Action
{
    private array $items;

    final public static function getId(): string
    {
        return 'group_action';
    }

    abstract protected function prepareChildItems(): array;

    private function getChildItems(): array
    {
        $this->items ??= $this->prepareChildItems();
 
        return $this->items;
    }

    public function getControl(): ?array
    {
        $items = $this->getGroupDropdownItems();
        if (empty($items))
        {
            return null;
        }
 
        return [
            'TYPE' => Types::DROPDOWN,
            'ID' => static::getId(),
            'NAME' => static::getId(),
            'ITEMS' => [
                [
                    'NAME' => Loc::getMessage('MAIN_GRID_PANEL_GROUP_ACTIONS_ITEM_PLACEHOLDER'),
                    'VALUE' => 'default',
                    'ONCHANGE' => [
                        [
                            'ACTION' => Actions::RESET_CONTROLS,
                        ],
                    ],
                ],
                ... $items,
            ],
        ];
    }

    private function getGroupDropdownItems(): array
    {
        $result = [];
 
        foreach ($this->getChildItems() as $item)
        {
            $result[] = $item->getDropdownItem();
        }
 
        return $result;
    }

    final public function processRequest(HttpRequest $request, bool $isSelectedAllRows, ?Filter $filter): ?Result
    {
        $controls = $request->getPost('controls');
        $itemId = (string)($controls[static::getId()] ?? '');
        if (empty($itemId))
        {
            return null;
        }
 
        foreach ($this->getChildItems() as $item)
        {
            if ($item::getId() === $itemId)
            {
                return $item->processRequest($request, $isSelectedAllRows, $filter);
            }
        }
 
        return null;
    }
}