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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\extension; |
| 15 | |
| 16 | /** |
| 17 | * The interface extension meta classes have to implement to run custom code |
| 18 | * on enable/disable/purge. |
| 19 | */ |
| 20 | interface extension_interface |
| 21 | { |
| 22 | /** |
| 23 | * Indicate whether or not the extension can be enabled. |
| 24 | * |
| 25 | * @return bool|array True if extension is enableable, array of reasons |
| 26 | * if not, false for generic reason. |
| 27 | */ |
| 28 | public function is_enableable(); |
| 29 | |
| 30 | /** |
| 31 | * enable_step is executed on enabling an extension until it returns false. |
| 32 | * |
| 33 | * Calls to this function can be made in subsequent requests, when the |
| 34 | * function is invoked through a webserver with a too low max_execution_time. |
| 35 | * |
| 36 | * @param mixed $old_state The return value of the previous call |
| 37 | * of this method, or false on the first call |
| 38 | * @return mixed Returns false after last step, otherwise |
| 39 | * temporary state which is passed as an |
| 40 | * argument to the next step |
| 41 | */ |
| 42 | public function enable_step($old_state); |
| 43 | |
| 44 | /** |
| 45 | * Disables the extension. |
| 46 | * |
| 47 | * Calls to this function can be made in subsequent requests, when the |
| 48 | * function is invoked through a webserver with a too low max_execution_time. |
| 49 | * |
| 50 | * @param mixed $old_state The return value of the previous call |
| 51 | * of this method, or false on the first call |
| 52 | * @return mixed Returns false after last step, otherwise |
| 53 | * temporary state which is passed as an |
| 54 | * argument to the next step |
| 55 | */ |
| 56 | public function disable_step($old_state); |
| 57 | |
| 58 | /** |
| 59 | * purge_step is executed on purging an extension until it returns false. |
| 60 | * |
| 61 | * Calls to this function can be made in subsequent requests, when the |
| 62 | * function is invoked through a webserver with a too low max_execution_time. |
| 63 | * |
| 64 | * @param mixed $old_state The return value of the previous call |
| 65 | * of this method, or false on the first call |
| 66 | * @return mixed Returns false after last step, otherwise |
| 67 | * temporary state which is passed as an |
| 68 | * argument to the next step |
| 69 | */ |
| 70 | public function purge_step($old_state); |
| 71 | } |