Interface EventDispatcherInterface

The EventDispatcherInterface is the central point of Symfony's event listener system. Listeners are registered on the manager and events are dispatched through the manager.

Direct known implementers

Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcherInterface, Symfony\Component\EventDispatcher\EventDispatcher, Symfony\Component\EventDispatcher\ImmutableEventDispatcher

Indirect known implementers

Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher, Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher

Namespace: Symfony\Component\EventDispatcher
Author: Bernhard Schussek bschussek@gmail.com
Api
Located at EventDispatcherInterface.php

Methods summary
`public Symfony\Component\EventDispatcher\Event`	# `dispatch( string $eventName, Symfony\Component\EventDispatcher\Event $event = null )` Dispatches an event to all registered listeners. Dispatches an event to all registered listeners. Parameters `$eventName` The name of the event to dispatch. The name of the event is the name of the method that is invoked on listeners. `$event` The event to pass to the event handlers/listeners. If not supplied, an empty Event instance is created. Returns `Symfony\Component\EventDispatcher\Event` Api
`public`	# `addListener( string $eventName, callable $listener, integer $priority = 0 )` Adds an event listener that listens on the specified events. Adds an event listener that listens on the specified events. Parameters `$eventName` The event to listen on `$listener` The listener `$priority` The higher this value, the earlier an event listener will be triggered in the chain (defaults to 0) Api
`public`	# `addSubscriber( Symfony\Component\EventDispatcher\EventSubscriberInterface $subscriber )` Adds an event subscriber. Adds an event subscriber. The subscriber is asked for all the events he is interested in and added as a listener for these events. Parameters `$subscriber` The subscriber. Api
`public`	# `removeListener( string $eventName, callable $listener )` Removes an event listener from the specified events. Removes an event listener from the specified events. Parameters `$eventName` The event to remove a listener from `$listener` The listener to remove
`public`	# `removeSubscriber( Symfony\Component\EventDispatcher\EventSubscriberInterface $subscriber )` Removes an event subscriber. Removes an event subscriber. Parameters `$subscriber` The subscriber
`public array`	# `getListeners( string $eventName = null )` Gets the listeners of a specific event or all listeners. Gets the listeners of a specific event or all listeners. Parameters `$eventName` The name of the event Returns array The event listeners for the specified event, or all event listeners by event name
`public boolean`	# `hasListeners( string $eventName = null )` Checks whether an event has any registered listeners. Checks whether an event has any registered listeners. Parameters `$eventName` The name of the event Returns boolean true if the specified event has any listeners, false otherwise

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Interface EventDispatcherInterface

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