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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 | } |