external.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI\examples\Table\Ordering;

use ILIAS\UI\Implementation\Component\Table as T;
use ILIAS\UI\Component\Table as I;
use ILIAS\Data\URI;

function external()
{
    global $DIC;

    $f = $DIC['ui.factory'];

    $r = $DIC['ui.renderer'];

    $refinery = $DIC['refinery'];

    $df = new \ILIAS\Data\Factory();
    $request = $DIC->http()->request();
    $request_wrapper = $DIC->http()->wrapper()->query();

    $columns = [
        'id' => $f->table()->column()->number("ID"),
        'letter' => $f->table()->column()->text("Letter")
            ->withHighlight(true)
    ];

    $data_retrieval = new class ($f, $r) implements I\OrderingRetrieval {
        protected array $records;

        public function __construct(
            protected \ILIAS\UI\Factory $ui_factory,
            protected \ILIAS\UI\Renderer $ui_renderer
        ) {
            $this->records = $this->initRecords();
        }

        public function getRows(
            I\OrderingRowBuilder $row_builder,
            array $visible_column_ids
        ): \Generator {
            $records = array_values($this->records);
            foreach ($this->records as $position_index => $record) {
                yield $row_builder->buildOrderingRow((string) $record['id'], $record);
            }
        }

        protected function initRecords(): array
        {
            $r = range(65, 68);
            shuffle($r);

            foreach ($r as $id) {
                $records[(string) $id] = ['id' => $id, 'letter' => chr($id)];
            }
            return $records;
        }

        public function setOrder(array $ordered): void
        {
            $r = [];
            foreach ($ordered as $id) {
                $r[(string) $id] = $this->records[(string) $id];
            }
            $this->records = $r;
        }
    };

    $out = [];

    $target = (new URI((string) $request->getUri()))->withParameter('ordering_example', 3);
    $table = $f->table()->ordering($data_retrieval, $target, 'sort the letters', $columns)
        ->withRequest($request);

    if ($request->getMethod() == "POST"
        && $request_wrapper->has('ordering_example')
        && $request_wrapper->retrieve('ordering_example', $refinery->kindlyTo()->int()) === 3
    ) {
        $data = $table->withRequest($request)->getData();
        if ($data === range(65, 68)) {
            $data_retrieval->setOrder($data);
            $out[] = $f->messageBox()->success("ok. great ordering!");
        } else {
            $out[] = $f->messageBox()->failure("nah. try again.");
        }
    }
    $out[] = $table;
    return $r->render($out);
}