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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Core\Action; |
| 6 | |
| 7 | use Phpdftk\Pdf\Core\PdfDictionary; |
| 8 | use Phpdftk\Pdf\Core\PdfName; |
| 9 | use Phpdftk\Pdf\Core\PdfObject; |
| 10 | use Phpdftk\Pdf\Core\PdfReference; |
| 11 | |
| 12 | /** |
| 13 | * Abstract base class for all PDF action types (/Type /Action). |
| 14 | */ |
| 15 | abstract class Action extends PdfObject |
| 16 | { |
| 17 | public const PDF_TYPE = 'Action'; |
| 18 | |
| 19 | /** |
| 20 | * Returns the /S (action type) value for this action. |
| 21 | */ |
| 22 | abstract public function getActionType(): string; |
| 23 | |
| 24 | public ?PdfReference $next = null; // /Next - next action to perform |
| 25 | |
| 26 | /** |
| 27 | * Build a dictionary pre-populated with the common /Type, /S, and /Next |
| 28 | * entries so subclasses only need to add their subtype-specific fields. |
| 29 | */ |
| 30 | protected function baseDictionary(): PdfDictionary |
| 31 | { |
| 32 | $dict = new PdfDictionary(); |
| 33 | $dict->set('Type', new PdfName(self::PDF_TYPE)); |
| 34 | $dict->set('S', new PdfName($this->getActionType())); |
| 35 | if ($this->next !== null) { |
| 36 | $dict->set('Next', $this->next); |
| 37 | } |
| 38 | return $dict; |
| 39 | } |
| 40 | } |