Viewing file:  RegistersCustomConcerns.php (1.1 KB) -rw-r--r--
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<?php
namespace Maatwebsite\Excel;
use Maatwebsite\Excel\Events\AfterSheet;
use Maatwebsite\Excel\Events\BeforeExport;
use Maatwebsite\Excel\Events\BeforeSheet;
use Maatwebsite\Excel\Events\BeforeWriting;
use Maatwebsite\Excel\Events\Event;
trait RegistersCustomConcerns
{
/**
* @var array
*/
private static $eventMap = [
BeforeWriting::class => Writer::class,
BeforeExport::class => Writer::class,
BeforeSheet::class => Sheet::class,
AfterSheet::class => Sheet::class,
];
/**
* @param string $concern
* @param callable $handler
* @param string $event
*/
public static function extend(string $concern, callable $handler, string $event = BeforeWriting::class)
{
/** @var HasEventBus $delegate */
$delegate = static::$eventMap[$event] ?? BeforeWriting::class;
$delegate::listen($event, function (Event $event) use ($concern, $handler) {
if ($event->appliesToConcern($concern)) {
$handler($event->getConcernable(), $event->getDelegate());
}
});
}
}
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