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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\display_builder\Entity; |
| 6 | |
| 7 | use Drupal\display_builder\Plugin\Field\FieldType\HistoryStep; |
| 8 | |
| 9 | /** |
| 10 | * History interface. |
| 11 | * |
| 12 | * When you implement Undo and Redo, you want to keep track of the history |
| 13 | * of this state at different points in time. |
| 14 | * |
| 15 | * Inspired from https://redux.js.org/usage/implementing-undo-history |
| 16 | */ |
| 17 | interface HistoryInterface { |
| 18 | |
| 19 | /** |
| 20 | * Get current step. |
| 21 | * |
| 22 | * @return \Drupal\display_builder\Plugin\Field\FieldType\HistoryStep|null |
| 23 | * The current data. |
| 24 | */ |
| 25 | public function getCurrent(): ?HistoryStep; |
| 26 | |
| 27 | /** |
| 28 | * Get the state of the current step. |
| 29 | * |
| 30 | * @return array |
| 31 | * The current state. |
| 32 | */ |
| 33 | public function getCurrentState(): array; |
| 34 | |
| 35 | /** |
| 36 | * Set a new present. |
| 37 | * |
| 38 | * @param array $state |
| 39 | * The state to set. |
| 40 | * @param string|\Stringable $log_message |
| 41 | * (Optional) The log message. |
| 42 | * @param bool $check_hash |
| 43 | * (Optional) Should check hash to avoid duplicates. Default to TRUE. |
| 44 | * @param bool $index |
| 45 | * (Optional) When TRUE the raw $state is normalized through SourceTree |
| 46 | * before storing. Set to FALSE when the data was already produced by |
| 47 | * SourceTree::getTree() to skip redundant normalization. Default to TRUE. |
| 48 | */ |
| 49 | public function setNewPresent(array $state, string|\Stringable $log_message = '', bool $check_hash = TRUE, bool $index = TRUE): void; |
| 50 | |
| 51 | /** |
| 52 | * Get the past steps. |
| 53 | * |
| 54 | * @return array |
| 55 | * The past steps. |
| 56 | */ |
| 57 | public function getPast(): array; |
| 58 | |
| 59 | /** |
| 60 | * Get the future steps. |
| 61 | * |
| 62 | * @return array |
| 63 | * The future steps. |
| 64 | */ |
| 65 | public function getFuture(): array; |
| 66 | |
| 67 | /** |
| 68 | * Move history to the last past state. |
| 69 | */ |
| 70 | public function undo(): void; |
| 71 | |
| 72 | /** |
| 73 | * Move history to the first future state. |
| 74 | */ |
| 75 | public function redo(): void; |
| 76 | |
| 77 | /** |
| 78 | * Reset history to the current state. |
| 79 | */ |
| 80 | public function clear(): void; |
| 81 | |
| 82 | } |