Shared/contextual EventManager
Allows attaching to EMs composed by other classes without having an instance first. The assumption is that the SharedEventManager will be injected into EventManager instances, and then queried for additional listeners when triggering an event.
Attach a listener to an event
Allows attaching a callback to an event offered by one or more identifying components. As an example, the following connects to the “getAll” event of both an AbstractResource and EntityResource:
<code> $sharedEventManager = new SharedEventManager(); $sharedEventManager->attach(
array(‘MyResourceAbstractResource’, ‘MyResourceEntityResource’), ‘getAll’, function ($e) use ($cache) {
- if (!$id = $e->getParam(‘id’, false)) {
- return;
} if (!$data = $cache->load(get_class($resource) . ‘::getOne::’ . $id )) {
return;} return $data;
}
); </code>
Parameters: |
|
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Return type: | CallbackHandler|array Either CallbackHandler or array of CallbackHandlers |
Attach a listener aggregate
Listener aggregates accept an EventManagerInterface instance, and call attachShared() one or more times, typically to attach to multiple events using local methods.
Parameters: |
|
---|---|
Return type: | mixed return value of {@link ListenerAggregateInterface::attachShared()} |
Detach a listener from an event offered by a given resource
Parameters: |
|
---|---|
Return type: | bool Returns true if event and listener found, and unsubscribed; returns false if either event or listener not found |
Detach a listener aggregate
Listener aggregates accept an SharedEventManagerInterface instance, and call detachShared() of all previously attached listeners.
Parameters: | SharedListenerAggregateInterface – |
---|---|
Return type: | mixed return value of {@link SharedListenerAggregateInterface::detachShared()} |
Retrieve all registered events for a given resource
Parameters: | string|int – |
---|---|
Return type: | array |
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