EventManager/EventManager.php
inherited
Classes
Zend Framework
LICENSE
This source file is subject to the new BSD license that is bundled with this package in the file LICENSE.txt. It is also available through the world-wide-web at this URL: http://framework.zend.com/license/new-bsd If you did not receive a copy of the license and are unable to obtain it through the world-wide-web, please send an email to [email protected] so we can send you a copy immediately.
- Category
- Zend
- Copyright
- Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
- Package
- Zend_EventManager
\Zend_EventManager_EventManager
Event manager: notification system
Use the EventManager when you want to create a per-instance notification system for your objects.
- Implements
- \Zend_EventManager_EventCollection
- \Zend_EventManager_SharedEventCollectionAware
- Category
- Zend
- Copyright
- Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
Properties
string $eventClass = 'Zend_EventManager_Event''Zend_EventManager_Event'Details- Type
- string
array $events = array()Subscribed events and their listeners
<p>Array of Zend_Stdlib_PriorityQueue objects</p>array()Details- Type
- array
array $identifiers = array()Identifiers, used to pull static signals from StaticEventManager
array()Details- Type
- array
false|null|\Zend_EventManager_StaticEventCollection $sharedCollections = nullStatic collections
nullDetails- Type
- false | null | \Zend_EventManager_StaticEventCollection
Methods
__construct(null | string | int | array | \Traversable $identifiers = null) : voidConstructor
Allows optionally specifying identifier(s) to use to pull signals from a StaticEventManager.
| Name | Type | Description |
|---|---|---|
| $identifiers | null | string | int | array | \Traversable |
addIdentifiers(string | int | array | \Traversable $identifiers) : \Zend_EventManager_EventManagerAdd some identifier(s) (appends to any currently set identifiers)
| Name | Type | Description |
|---|---|---|
| $identifiers | string | int | array | \Traversable |
| Type | Description |
|---|---|
| \Zend_EventManager_EventManager |
attach(string | array | \Zend_EventManager_ListenerAggregate $event, callback | int $callback = null, int $priority = 1) : \Zend_Stdlib_CallbackHandler | mixedAttach a listener to an event
The first argument is the event, and the next argument describes a callback that will respond to that event. A CallbackHandler instance describing the event listener combination will be returned.
The last argument indicates a priority at which the event should be executed. By default, this value is 1; however, you may set it for any integer value. Higher values have higher priority (i.e., execute first).
You can specify "*" for the event name. In such cases, the listener will be triggered for every event.
| Name | Type | Description |
|---|---|---|
| $event | string | array | \Zend_EventManager_ListenerAggregate | An event or array of event names. If a ListenerAggregate, proxies to {@link attachAggregate()}. |
| $callback | callback | int | If string $event provided, expects PHP callback; for a ListenerAggregate $event, this will be the priority |
| $priority | int | If provided, the priority at which to register the callback |
| Type | Description |
|---|---|
| \Zend_Stdlib_CallbackHandler | mixed | CallbackHandler if attaching callback (to allow later unsubscribe); mixed if attaching aggregate |
attachAggregate(\Zend_EventManager_ListenerAggregate $aggregate, int $priority = 1) : mixedAttach a listener aggregate
Listener aggregates accept an EventCollection instance, and call attach() one or more times, typically to attach to multiple events using local methods.
| Name | Type | Description |
|---|---|---|
| $aggregate | \Zend_EventManager_ListenerAggregate | |
| $priority | int | If provided, a suggested priority for the aggregate to use |
| Type | Description |
|---|---|
| mixed | return value of {@link Zend_EventManager_ListenerAggregate::attach()} |
clearListeners(string $event) : voidClear all listeners for a given event
| Name | Type | Description |
|---|---|---|
| $event | string |
detach(\Zend_Stdlib_CallbackHandler | \Zend_EventManager_ListenerAggregate $listener) : boolUnsubscribe a listener from an event
| Name | Type | Description |
|---|---|---|
| $listener | \Zend_Stdlib_CallbackHandler | \Zend_EventManager_ListenerAggregate |
| Type | Description |
|---|---|
| bool | Returns true if event and listener found, and unsubscribed; returns false if either event or listener not found |
| Exception | Description |
|---|---|
| \Zend_EventManager_Exception_InvalidArgumentException | if invalid listener provided |
detachAggregate(\Zend_EventManager_ListenerAggregate $aggregate) : mixedDetach a listener aggregate
Listener aggregates accept an EventCollection instance, and call detach() of all previously attached listeners.
| Name | Type | Description |
|---|---|---|
| $aggregate | \Zend_EventManager_ListenerAggregate |
| Type | Description |
|---|---|
| mixed | return value of {@link Zend_EventManager_ListenerAggregate::detach()} |
getEvents() : arrayRetrieve all registered events
| Type | Description |
|---|---|
| array |
getIdentifiers() : arrayGet the identifier(s) for this Zend_EventManager_EventManager
| Type | Description |
|---|---|
| array |
getListeners(string $event) : \Zend_Stdlib_PriorityQueueRetrieve all listeners for a given event
| Name | Type | Description |
|---|---|---|
| $event | string |
| Type | Description |
|---|---|
| \Zend_Stdlib_PriorityQueue |
getSharedCollections() : false | \Zend_EventManager_SharedEventCollectionGet static collections container
| Type | Description |
|---|---|
| false | \Zend_EventManager_SharedEventCollection |
getSharedListeners(string $event) : arrayGet list of all listeners attached to the shared collection for identifiers registered by this instance
| Name | Type | Description |
|---|---|---|
| $event | string |
| Type | Description |
|---|---|
| array |
insertListeners(\Zend_Stdlib_PriorityQueue $masterListeners, \Zend_Stdlib_PriorityQueue $listeners) : voidAdd listeners to the master queue of listeners
Used to inject shared listeners and wildcard listeners.
| Name | Type | Description |
|---|---|---|
| $masterListeners | \Zend_Stdlib_PriorityQueue | |
| $listeners | \Zend_Stdlib_PriorityQueue |
prepareArgs(array $args) : \ArrayObjectPrepare arguments
Use this method if you want to be able to modify arguments from within a listener. It returns an ArrayObject of the arguments, which may then be passed to trigger() or triggerUntil().
| Name | Type | Description |
|---|---|---|
| $args | array |
| Type | Description |
|---|---|
| \ArrayObject |
setEventClass(string $class) : \Zend_EventManager_EventManagerSet the event class to utilize
| Name | Type | Description |
|---|---|---|
| $class | string |
| Type | Description |
|---|---|
| \Zend_EventManager_EventManager |
setIdentifiers(string | int | array | \Traversable $identifiers) : \Zend_EventManager_EventManagerSet the identifiers (overrides any currently set identifiers)
| Name | Type | Description |
|---|---|---|
| $identifiers | string | int | array | \Traversable |
| Type | Description |
|---|---|
| \Zend_EventManager_EventManager |
setSharedCollections(\Zend_EventManager_StaticEventCollection $collections) : voidSet static collections container
| Name | Type | Description |
|---|---|---|
| $collections | \Zend_EventManager_StaticEventCollection |
trigger(string $event, string | object $target = null, array | \ArrayAccess $argv = array(), null | callback $callback = null) : \Zend_EventManager_ResponseCollectionTrigger all listeners for a given event
Can emulate triggerUntil() if the last argument provided is a callback.
| Name | Type | Description |
|---|---|---|
| $event | string | |
| $target | string | object | Object calling emit, or symbol describing target (such as static method name) |
| $argv | array | \ArrayAccess | Array of arguments; typically, should be associative |
| $callback | null | callback |
| Type | Description |
|---|---|
| \Zend_EventManager_ResponseCollection | All listener return values |
triggerListeners(string $event, \EventDescription $e, null | callback $callback = null) : \ResponseCollectionTrigger listeners
Actual functionality for triggering listeners, to which both trigger() and triggerUntil() delegate.
| Name | Type | Description |
|---|---|---|
| $event | string | Event name |
| $e | \EventDescription | |
| $callback | null | callback |
| Type | Description |
|---|---|
| \ResponseCollection |
triggerUntil(string $event, string | object $target, array | \ArrayAccess $argv = null, \Callable $callback = null) : \Zend_EventManager_ResponseCollectionTrigger listeners until return value of one causes a callback to evaluate to true
Triggers listeners until the provided callback evaluates the return value of one as true, or until all listeners have been executed.
| Name | Type | Description |
|---|---|---|
| $event | string | |
| $target | string | object | Object calling emit, or symbol describing target (such as static method name) |
| $argv | array | \ArrayAccess | Array of arguments; typically, should be associative |
| $callback | \Callable |
| Type | Description |
|---|---|
| \Zend_EventManager_ResponseCollection |
| Exception | Description |
|---|---|
| \Zend_Stdlib_Exception_InvalidCallbackException | if invalid callback provided |
unsetSharedCollections() : voidRemove any shared collections
Sets $sharedCollections to boolean false to disable ability to lazy-load static event manager instance.