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1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Core\Annotation;
6
7use Phpdftk\Pdf\Core\PdfName;
8use Phpdftk\Pdf\Core\PdfReference;
9use Phpdftk\Pdf\Core\PdfVersion;
10use Phpdftk\Pdf\Core\RequiresPdfVersion;
11
12/**
13 * FileAttachment annotation (/Subtype /FileAttachment).
14 */
15#[RequiresPdfVersion(PdfVersion::V1_3)]
16class FileAttachmentAnnotation extends MarkupAnnotation
17{
18    public ?PdfReference $fs = null;  // /FS - file specification
19    public ?PdfName $name = null;     // /Name - icon name
20
21    public function getSubtype(): string
22    {
23        return 'FileAttachment';
24    }
25
26    public function toPdf(): string
27    {
28        $dict = $this->buildDictionary();
29
30        if ($this->fs !== null) {
31            $dict->set('FS', $this->fs);
32        }
33        if ($this->name !== null) {
34            $dict->set('Name', $this->name);
35        }
36
37        return $dict->toPdf();
38    }
39}