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1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Core\Interactive\Form;
6
7use Phpdftk\Pdf\Core\PdfName;
8use Phpdftk\Pdf\Core\PdfNumber;
9use Phpdftk\Pdf\Core\PdfVersion;
10use Phpdftk\Pdf\Core\RequiresPdfVersion;
11
12/**
13 * Text field (/FT /Tx).
14 */
15#[RequiresPdfVersion(PdfVersion::V1_2)]
16class TextField extends Field
17{
18    public ?int $maxLen = null;  // /MaxLen
19
20    public function __construct()
21    {
22        $this->ft = new PdfName('Tx');
23    }
24
25    public function toPdf(): string
26    {
27        $dict = $this->buildFieldDictionary();
28
29        if ($this->maxLen !== null) {
30            $dict->set('MaxLen', new PdfNumber($this->maxLen));
31        }
32
33        return $dict->toPdf();
34    }
35}