diff options
Diffstat (limited to 'vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php')
-rw-r--r-- | vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php b/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php new file mode 100644 index 00000000..9448ed43 --- /dev/null +++ b/vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php | |||
@@ -0,0 +1,202 @@ | |||
1 | <?php | ||
2 | |||
3 | /* | ||
4 | * This file is part of the Symfony package. | ||
5 | * | ||
6 | * (c) Fabien Potencier <fabien@symfony.com> | ||
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 Symfony\Component\EventDispatcher; | ||
13 | |||
14 | use Symfony\Component\DependencyInjection\ContainerInterface; | ||
15 | |||
16 | /** | ||
17 | * Lazily loads listeners and subscribers from the dependency injection | ||
18 | * container | ||
19 | * | ||
20 | * @author Fabien Potencier <fabien@symfony.com> | ||
21 | * @author Bernhard Schussek <bschussek@gmail.com> | ||
22 | * @author Jordan Alliot <jordan.alliot@gmail.com> | ||
23 | */ | ||
24 | class ContainerAwareEventDispatcher extends EventDispatcher | ||
25 | { | ||
26 | /** | ||
27 | * The container from where services are loaded | ||
28 | * @var ContainerInterface | ||
29 | */ | ||
30 | private $container; | ||
31 | |||
32 | /** | ||
33 | * The service IDs of the event listeners and subscribers | ||
34 | * @var array | ||
35 | */ | ||
36 | private $listenerIds = array(); | ||
37 | |||
38 | /** | ||
39 | * The services registered as listeners | ||
40 | * @var array | ||
41 | */ | ||
42 | private $listeners = array(); | ||
43 | |||
44 | /** | ||
45 | * Constructor. | ||
46 | * | ||
47 | * @param ContainerInterface $container A ContainerInterface instance | ||
48 | */ | ||
49 | public function __construct(ContainerInterface $container) | ||
50 | { | ||
51 | $this->container = $container; | ||
52 | } | ||
53 | |||
54 | /** | ||
55 | * Adds a service as event listener | ||
56 | * | ||
57 | * @param string $eventName Event for which the listener is added | ||
58 | * @param array $callback The service ID of the listener service & the method | ||
59 | * name that has to be called | ||
60 | * @param integer $priority The higher this value, the earlier an event listener | ||
61 | * will be triggered in the chain. | ||
62 | * Defaults to 0. | ||
63 | * | ||
64 | * @throws \InvalidArgumentException | ||
65 | */ | ||
66 | public function addListenerService($eventName, $callback, $priority = 0) | ||
67 | { | ||
68 | if (!is_array($callback) || 2 !== count($callback)) { | ||
69 | throw new \InvalidArgumentException('Expected an array("service", "method") argument'); | ||
70 | } | ||
71 | |||
72 | $this->listenerIds[$eventName][] = array($callback[0], $callback[1], $priority); | ||
73 | } | ||
74 | |||
75 | public function removeListener($eventName, $listener) | ||
76 | { | ||
77 | $this->lazyLoad($eventName); | ||
78 | |||
79 | if (isset($this->listeners[$eventName])) { | ||
80 | foreach ($this->listeners[$eventName] as $key => $l) { | ||
81 | foreach ($this->listenerIds[$eventName] as $i => $args) { | ||
82 | list($serviceId, $method, $priority) = $args; | ||
83 | if ($key === $serviceId.'.'.$method) { | ||
84 | if ($listener === array($l, $method)) { | ||
85 | unset($this->listeners[$eventName][$key]); | ||
86 | if (empty($this->listeners[$eventName])) { | ||
87 | unset($this->listeners[$eventName]); | ||
88 | } | ||
89 | unset($this->listenerIds[$eventName][$i]); | ||
90 | if (empty($this->listenerIds[$eventName])) { | ||
91 | unset($this->listenerIds[$eventName]); | ||
92 | } | ||
93 | } | ||
94 | } | ||
95 | } | ||
96 | } | ||
97 | } | ||
98 | |||
99 | parent::removeListener($eventName, $listener); | ||
100 | } | ||
101 | |||
102 | /** | ||
103 | * @see EventDispatcherInterface::hasListeners | ||
104 | */ | ||
105 | public function hasListeners($eventName = null) | ||
106 | { | ||
107 | if (null === $eventName) { | ||
108 | return (Boolean) count($this->listenerIds) || (Boolean) count($this->listeners); | ||
109 | } | ||
110 | |||
111 | if (isset($this->listenerIds[$eventName])) { | ||
112 | return true; | ||
113 | } | ||
114 | |||
115 | return parent::hasListeners($eventName); | ||
116 | } | ||
117 | |||
118 | /** | ||
119 | * @see EventDispatcherInterface::getListeners | ||
120 | */ | ||
121 | public function getListeners($eventName = null) | ||
122 | { | ||
123 | if (null === $eventName) { | ||
124 | foreach (array_keys($this->listenerIds) as $serviceEventName) { | ||
125 | $this->lazyLoad($serviceEventName); | ||
126 | } | ||
127 | } else { | ||
128 | $this->lazyLoad($eventName); | ||
129 | } | ||
130 | |||
131 | return parent::getListeners($eventName); | ||
132 | } | ||
133 | |||
134 | /** | ||
135 | * Adds a service as event subscriber | ||
136 | * | ||
137 | * @param string $serviceId The service ID of the subscriber service | ||
138 | * @param string $class The service's class name (which must implement EventSubscriberInterface) | ||
139 | */ | ||
140 | public function addSubscriberService($serviceId, $class) | ||
141 | { | ||
142 | foreach ($class::getSubscribedEvents() as $eventName => $params) { | ||
143 | if (is_string($params)) { | ||
144 | $this->listenerIds[$eventName][] = array($serviceId, $params, 0); | ||
145 | } elseif (is_string($params[0])) { | ||
146 | $this->listenerIds[$eventName][] = array($serviceId, $params[0], isset($params[1]) ? $params[1] : 0); | ||
147 | } else { | ||
148 | foreach ($params as $listener) { | ||
149 | $this->listenerIds[$eventName][] = array($serviceId, $listener[0], isset($listener[1]) ? $listener[1] : 0); | ||
150 | } | ||
151 | } | ||
152 | } | ||
153 | } | ||
154 | |||
155 | /** | ||
156 | * {@inheritDoc} | ||
157 | * | ||
158 | * Lazily loads listeners for this event from the dependency injection | ||
159 | * container. | ||
160 | * | ||
161 | * @throws \InvalidArgumentException if the service is not defined | ||
162 | */ | ||
163 | public function dispatch($eventName, Event $event = null) | ||
164 | { | ||
165 | $this->lazyLoad($eventName); | ||
166 | |||
167 | return parent::dispatch($eventName, $event); | ||
168 | } | ||
169 | |||
170 | public function getContainer() | ||
171 | { | ||
172 | return $this->container; | ||
173 | } | ||
174 | |||
175 | /** | ||
176 | * Lazily loads listeners for this event from the dependency injection | ||
177 | * container. | ||
178 | * | ||
179 | * @param string $eventName The name of the event to dispatch. The name of | ||
180 | * the event is the name of the method that is | ||
181 | * invoked on listeners. | ||
182 | */ | ||
183 | protected function lazyLoad($eventName) | ||
184 | { | ||
185 | if (isset($this->listenerIds[$eventName])) { | ||
186 | foreach ($this->listenerIds[$eventName] as $args) { | ||
187 | list($serviceId, $method, $priority) = $args; | ||
188 | $listener = $this->container->get($serviceId); | ||
189 | |||
190 | $key = $serviceId.'.'.$method; | ||
191 | if (!isset($this->listeners[$eventName][$key])) { | ||
192 | $this->addListener($eventName, array($listener, $method), $priority); | ||
193 | } elseif ($listener !== $this->listeners[$eventName][$key]) { | ||
194 | parent::removeListener($eventName, array($this->listeners[$eventName][$key], $method)); | ||
195 | $this->addListener($eventName, array($listener, $method), $priority); | ||
196 | } | ||
197 | |||
198 | $this->listeners[$eventName][$key] = $listener; | ||
199 | } | ||
200 | } | ||
201 | } | ||
202 | } | ||