|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of the Moss micro-framework |
|
5
|
|
|
* |
|
6
|
|
|
* (c) Michal Wachowski <[email protected]> |
|
7
|
|
|
* |
|
8
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
9
|
|
|
* file that was distributed with this source code. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
namespace Moss\Storage\Query\EventDispatcher; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* Event dispatcher |
|
16
|
|
|
* |
|
17
|
|
|
* @author Michal Wachowski <[email protected]> |
|
18
|
|
|
* @package Moss\Storage |
|
19
|
|
|
*/ |
|
20
|
|
|
final class EventDispatcher implements EventDispatcherInterface |
|
21
|
|
|
{ |
|
22
|
|
|
/** |
|
23
|
|
|
* @var array |
|
24
|
|
|
*/ |
|
25
|
|
|
private $events = []; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* Adds listener to single event or array of events |
|
29
|
|
|
* |
|
30
|
|
|
* @param string|array $event |
|
31
|
|
|
* @param callable $listener |
|
32
|
|
|
* @param null|int $priority |
|
33
|
|
|
* |
|
34
|
|
|
* @return $this |
|
35
|
|
|
*/ |
|
36
|
|
|
public function register($event, callable $listener, $priority = null) |
|
37
|
|
|
{ |
|
38
|
|
|
foreach ((array) $event as $e) { |
|
39
|
|
|
$this->registerListener($e, $listener, $priority); |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
return $this; |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Register listener to event |
|
47
|
|
|
* |
|
48
|
|
|
* @param string $event |
|
49
|
|
|
* @param callable $listener |
|
50
|
|
|
* @param int $priority |
|
51
|
|
|
*/ |
|
52
|
|
|
private function registerListener($event, callable $listener, $priority) |
|
53
|
|
|
{ |
|
54
|
|
|
if (!isset($this->events[$event])) { |
|
55
|
|
|
$this->events[$event] = []; |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
if ($priority === null) { |
|
59
|
|
|
$this->events[$event][] = $listener; |
|
60
|
|
|
|
|
61
|
|
|
return; |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
array_splice($this->events[$event], (int) $priority, 0, [$listener]); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
/** |
|
68
|
|
|
* Fires event |
|
69
|
|
|
* |
|
70
|
|
|
* @param string $eventName |
|
71
|
|
|
* @param mixed $subject |
|
72
|
|
|
* |
|
73
|
|
|
* @return mixed |
|
74
|
|
|
* @throws \Exception |
|
75
|
|
|
*/ |
|
76
|
|
|
public function fire($eventName, $subject = null) |
|
77
|
|
|
{ |
|
78
|
|
|
if (!isset($this->events[$eventName])) { |
|
79
|
|
|
return $subject; |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
$event = new Event($eventName, $subject); |
|
83
|
|
|
|
|
84
|
|
|
foreach ($this->events[$eventName] as $listener) { |
|
85
|
|
|
if ($event->isStopped()) { |
|
86
|
|
|
break; |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
$listener($event); |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
return $event->getSubject(); |
|
93
|
|
|
} |
|
94
|
|
|
} |
|
95
|
|
|
|
mossphp /
moss-storage
