Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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provider.php
01 <?php
02 /**
03 *
04 * This file is part of the phpBB Forum Software package.
05 *
06 * @copyright (c) phpBB Limited <https://www.phpbb.com>
07 * @license GNU General Public License, version 2 (GPL-2.0)
08 *
09 * For full copyright and license information, please see
10 * the docs/CREDITS.txt file.
11 *
12 */
13
14 namespace phpbb\extension;
15
16 /**
17 * Provides a set of items found in extensions.
18 *
19 * This abstract class is essentially a wrapper around item-specific
20 * finding logic. It handles storing the extension manager via constructor
21 * for the finding logic to use to find the items, and provides an
22 * iterator interface over the items found by the finding logic.
23 *
24 * Items could be anything, for example template paths or cron task names.
25 * Derived classes completely define what the items are.
26 */
27 abstract class provider implements \IteratorAggregate
28 {
29 /**
30 * Array holding all found items
31 * @var array|null
32 */
33 protected $items = null;
34
35 /**
36 * An extension manager to search for items in extensions
37 * @var \phpbb\extension\manager
38 */
39 protected $extension_manager;
40
41 /**
42 * Constructor. Loads all available items.
43 *
44 * @param \phpbb\extension\manager $extension_manager phpBB extension manager
45 */
46 public function __construct(\phpbb\extension\manager $extension_manager)
47 {
48 $this->extension_manager = $extension_manager;
49 }
50
51 /**
52 * Finds items using the extension manager.
53 *
54 * @return array List of task names
55 */
56 abstract protected function find();
57
58 /**
59 * Retrieve an iterator over all items
60 *
61 * @return \ArrayIterator An iterator for the array of template paths
62 */
63 public function getIterator()
64 {
65 if ($this->items === null)
66 {
67 $this->items = $this->find();
68 }
69
70 return new \ArrayIterator($this->items);
71 }
72 }
73