StatefulEmitter class

Inheritance
  • Object
  • EventEmitter
  • StatefulEmitter

Constructors

StatefulEmitter()

Properties

count → int
Get the unique count of events registered in the emitter.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
state ↔ Map<String, dynamic>
getter/setter pair

Methods

clear() → void
Clear all subscribers from the cache.
inherited
emit(String event, [Object? sender, Object? data]) → void
API to emit events. event is a required parameter. If sender information is sent, it will be used to intimate user about it. event - What event needs to be emitted. sender - The sender who published the event. Ignore if not required. data - Data the event need to carry. Ignore this argument if no data needs to be sent.
inherited
getListenersCount(String event) → int
Get the list of subscribers for a particular event.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
off(Listener? listener) → void
Remove event listener from emitter. This will unsubscribe the caller from the emitter from any future events. Listener should be a valid instance. listener - Listener instance to be removed from the event subscription.
inherited
on(String event, Object? context, EventCallback callback) → Listener
API to register for notification. It is mandatory to pass event name and callback parameters. event - Event name used for the subscription. A valid event name is mandatory. context - Context information, which need to be sent in all emitted events. callback - EventCallback function registered to receive events emitted from the publisher. A valid callback function is mandatory.
inherited
removeAllByCallback(EventCallback callback) → void
Remove all listeners which matches with the callback provided. It is possible to register for multiple events with a single callback. This mechanism ensure that all event registrations would be cancelled which matches the callback. callback - The event callback used during subscription.
inherited
removeAllByEvent(String event) → void
Use this mechanism to remove all subscription for a particular event. Caution : This will remove all the listeners from multiple files or classes or modules. Think twice before calling this API and make sure you know what you are doing!!! event - Event name used during subscription.
inherited
removeListener(String eventName, EventCallback callback) → void
Unsubscribe from getting any future events from emitter. This mechanism uses event name and callback to unsubscribe from all possible events. eventName - Event name for the subscription. callback - EventCallback used when registering subscription using on function.
inherited
setState(Map<String, dynamic> newState) → void
toString() → String
A string representation of this object.
inherited
un(Listener listener) → void

Operators

operator ==(Object other) → bool
The equality operator.
inherited