| @@ -13,14 +13,13 @@ | ||
| 13 | 13 | * |
| 14 | 14 | * All other layout managers extend this, and might implement their own versions of generate_level_1_gallery and generate_level_2_gallery |
| 15 | 15 | */ |
| 16 | 16 | abstract class Core_Layout { |
| 17 | - protected $library; | |
| 18 | - protected $layout; | |
| 19 | - protected $common_parameters = []; | |
| 20 | - protected $prompt_title; | |
| 21 | - protected $prompt_submit; | |
| 22 | - protected $prompt_text; | |
| 17 | + protected ?string $library; | |
| 18 | + protected array $common_parameters = []; | |
| 19 | + protected string $prompt_title; | |
| 20 | + protected string $prompt_submit; | |
| 21 | + protected string $prompt_text; | |
| 23 | 22 | |
| 24 | 23 | protected function __construct() { |
| 25 | 24 | $this->library = esc_attr(Photonic::$library); |
| 26 | 25 | |