|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* @package CleverStyle CMS |
|
4
|
|
|
* @author Nazar Mokrynskyi <[email protected]> |
|
5
|
|
|
* @copyright Copyright (c) 2015-2016, Nazar Mokrynskyi |
|
6
|
|
|
* @license MIT License, see license.txt |
|
7
|
|
|
*/ |
|
8
|
|
|
namespace cs; |
|
9
|
|
|
/** |
|
10
|
|
|
* Event class |
|
11
|
|
|
* |
|
12
|
|
|
* Provides events subscribing and dispatching |
|
13
|
|
|
* |
|
14
|
|
|
* @method static Event instance($check = false) |
|
15
|
|
|
*/ |
|
16
|
|
|
class Event { |
|
17
|
|
|
use Singleton; |
|
18
|
|
|
/** |
|
19
|
|
|
* @var callable[][] |
|
20
|
|
|
*/ |
|
21
|
|
|
protected $callbacks = []; |
|
22
|
|
|
/** |
|
23
|
|
|
* @var bool |
|
24
|
|
|
*/ |
|
25
|
|
|
protected $initialized = false; |
|
26
|
|
|
/** |
|
27
|
|
|
* Add event handler |
|
28
|
|
|
* |
|
29
|
|
|
* @param string $event For example `admin/System/components/plugins/disable` |
|
30
|
|
|
* @param callable $callback Callable, that will be called at event dispatching |
|
31
|
|
|
* |
|
32
|
|
|
* @return Event |
|
33
|
|
|
*/ |
|
34
|
|
|
function on ($event, $callback) { |
|
35
|
|
|
if (!$event || !is_callable($callback)) { |
|
36
|
|
|
return $this; |
|
37
|
|
|
} |
|
38
|
|
|
$this->callbacks[$event][] = $callback; |
|
39
|
|
|
return $this; |
|
40
|
|
|
} |
|
41
|
|
|
/** |
|
42
|
|
|
* Remove event handler |
|
43
|
|
|
* |
|
44
|
|
|
* @param string $event |
|
45
|
|
|
* @param callable|null $callback If not specified - all callbacks for this event will be removed |
|
46
|
|
|
* |
|
47
|
|
|
* @return Event |
|
48
|
|
|
*/ |
|
49
|
|
|
function off ($event, $callback = null) { |
|
50
|
|
|
if (!isset($this->callbacks[$event])) { |
|
51
|
|
|
return $this; |
|
52
|
|
|
} |
|
53
|
|
|
if (!$callback) { |
|
54
|
|
|
unset($this->callbacks[$event]); |
|
55
|
|
|
return $this; |
|
56
|
|
|
} |
|
57
|
|
|
$this->callbacks[$event] = array_filter( |
|
58
|
|
|
$this->callbacks[$event], |
|
59
|
|
|
function ($c) use ($callback) { |
|
60
|
|
|
return $c !== $callback; |
|
61
|
|
|
} |
|
62
|
|
|
); |
|
63
|
|
|
return $this; |
|
64
|
|
|
} |
|
65
|
|
|
/** |
|
66
|
|
|
* Similar to `::on()`, but but removes handler after handling of first event |
|
67
|
|
|
* |
|
68
|
|
|
* @param string $event |
|
69
|
|
|
* @param callable $callback |
|
70
|
|
|
* |
|
71
|
|
|
* @return Event |
|
72
|
|
|
*/ |
|
73
|
|
|
function once ($event, $callback) { |
|
74
|
|
|
if (!$event || !is_callable($callback)) { |
|
75
|
|
|
return $this; |
|
76
|
|
|
} |
|
77
|
|
|
$wrapped_callback = function () use (&$wrapped_callback, $event, $callback) { |
|
78
|
|
|
$this->off($event, $wrapped_callback); |
|
79
|
|
|
call_user_func_array($callback, func_get_args()); |
|
80
|
|
|
}; |
|
81
|
|
|
return $this->on($event, $wrapped_callback); |
|
82
|
|
|
} |
|
83
|
|
|
/** |
|
84
|
|
|
* Fire event |
|
85
|
|
|
* |
|
86
|
|
|
* After event name it is possible to specify as many arguments as needed |
|
87
|
|
|
* |
|
88
|
|
|
* @param string $event For example `admin/System/components/plugins/disable` |
|
89
|
|
|
* @param mixed $param1 |
|
90
|
|
|
* @param mixed $_ |
|
91
|
|
|
* |
|
92
|
|
|
* @return bool |
|
93
|
|
|
*/ |
|
94
|
|
|
function fire ($event, $param1 = null, $_ = null) { |
|
95
|
|
|
if (!$this->initialized) { |
|
96
|
|
|
$this->initialize(); |
|
97
|
|
|
} |
|
98
|
|
|
if ( |
|
99
|
|
|
!$event || |
|
100
|
|
|
!isset($this->callbacks[$event]) |
|
101
|
|
|
) { |
|
102
|
|
|
return true; |
|
103
|
|
|
} |
|
104
|
|
|
$arguments = array_slice(func_get_args(), 1); |
|
105
|
|
|
foreach ($this->callbacks[$event] as $callback) { |
|
106
|
|
|
if (call_user_func_array($callback, $arguments) === false) { |
|
107
|
|
|
return false; |
|
108
|
|
|
} |
|
109
|
|
|
} |
|
110
|
|
|
return true; |
|
111
|
|
|
} |
|
112
|
|
|
/** |
|
113
|
|
|
* Initialize all events handlers |
|
114
|
|
|
*/ |
|
115
|
|
|
protected function initialize () { |
|
116
|
|
|
foreach ($this->events_files_paths() as $path) { |
|
117
|
|
|
include DIR."/$path"; |
|
118
|
|
|
} |
|
119
|
|
|
$this->initialized = true; |
|
120
|
|
|
} |
|
121
|
|
|
/** |
|
122
|
|
|
* @return string[] |
|
123
|
|
|
*/ |
|
124
|
|
|
protected function events_files_paths () { |
|
125
|
|
|
return Cache::instance()->get( |
|
126
|
|
|
'events_files_paths', |
|
127
|
|
|
function () { |
|
128
|
|
|
$paths = []; |
|
129
|
|
|
foreach (get_files_list(MODULES, false, 'd', 'components/modules') as $path) { |
|
130
|
|
|
if (file_exists(DIR."/$path/events.php")) { |
|
131
|
|
|
$paths[] = "$path/events.php"; |
|
132
|
|
|
} |
|
133
|
|
|
} |
|
134
|
|
|
foreach (get_files_list(PLUGINS, false, 'd', 'components/plugins') as $path) { |
|
135
|
|
|
if (file_exists(DIR."/$path/events.php")) { |
|
136
|
|
|
$paths[] = "$path/events.php"; |
|
137
|
|
|
} |
|
138
|
|
|
} |
|
139
|
|
|
return $paths; |
|
140
|
|
|
} |
|
141
|
|
|
); |
|
142
|
|
|
} |
|
143
|
|
|
} |
|
144
|
|
|
|
nazar-pc /
CleverStyle-Framework
