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<?php
namespace ipl\Web\Common;
use InvalidArgumentException;
use ipl\Html\BaseHtmlElement;
use ipl\Orm\ResultSet;
use ipl\Stdlib\BaseFilter;
use ipl\Web\Widget\EmptyStateBar;
/**
* Base class for item lists
*/
abstract class BaseItemList extends BaseHtmlElement
{
use BaseFilter;
/** @var array<string, mixed> */
protected $baseAttributes = [
'class' => ['item-list', 'default-layout'],
'data-base-target' => '_next',
'data-pdfexport-page-breaks-at' => '.list-item'
];
/** @var ResultSet|iterable<object> */
protected $data;
protected $tag = 'ul';
/**
* Create a new item list
*
* @param ResultSet|iterable<object> $data Data source of the list
*/
public function __construct($data)
{
if (! is_iterable($data)) {
throw new InvalidArgumentException('Data must be an array or an instance of Traversable');
}
$this->data = $data;
$this->addAttributes($this->baseAttributes);
$this->init();
}
abstract protected function getItemClass(): string;
/**
* Initialize the item list
*
* If you want to adjust the item list after construction, override this method.
*/
protected function init(): void
{
}
protected function assemble(): void
{
$itemClass = $this->getItemClass();
foreach ($this->data as $data) {
/** @var BaseListItem|BaseTableRowItem $item */
$item = new $itemClass($data, $this);
$this->addHtml($item);
}
if ($this->isEmpty()) {
$this->setTag('div');
$this->addHtml(new EmptyStateBar(t('No items found.')));
}
}
}
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