AbstractPlaceholderHandler.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Mail\Placeholder;
 
use ilLanguage;
use ILIAS\Mail\Signature\Signature;
 
abstract class AbstractPlaceholderHandler implements Placeholder
{
    protected ?Placeholder $next = null;
 
    public function __construct(protected ilLanguage $lng)
    {
    }
 
    public function getLabel(): string
    {
        return $this->lng->txt('mail_nacc_' . strtolower($this->getId()));
    }
 
    public function setNext(Placeholder $next): Placeholder
    {
        $this->next = $next;
 
        return $next;
    }
 
    public function getNext(): ?Placeholder
    {
        return $this->next;
    }
 
    public function handle(Signature $signature): array
    {
        $placeholders = [];
 
        if ($this->next) {
            $placeholders = $this->next->handle($signature);
        }
 
        if ($signature->supports($this)) {
            $placeholders = $this->addPlaceholder($placeholders);
        }
 
        return $placeholders;
    }
 
    abstract public function addPlaceholder(array $placeholder): array;
}