EventListener<T extends Event> class

Inheritance
Mixed-in types
Available extensions

Constructors

EventListener.new({String? type, EventDispatchCallback<T>? callback, bool protected = false, bool once = false, Function? alias})

Properties

alias → Function?
final
autoDispose → bool
Whether the observer should be detached from the subject when the stream is closed.
no setterinherited
callback → SubscriberCallback<Event>?
The callback to be executed when a new state is notified by the subject.
finalinherited
first → Future<Event>
The first element of this stream.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isBroadcast → bool
Whether this stream is a broadcast stream.
no setterinherited
isCanceled → bool
Whether the observer is canceled.
no setterinherited
isEmpty → Future<bool>
Whether this stream contains any elements.
no setterinherited
last → Future<Event>
The last element of this stream.
no setterinherited
length → Future<int>
The number of elements in this stream.
no setterinherited
nested → bool
no setterinherited
onCancel → Future<void>
A future that completes when the observer is canceled.
no setterinherited
once → bool
final
protected → bool
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
single → Future<Event>
The single element of this stream.
no setterinherited
subjects → List<Subject<Event>>
List of subjects that the observer is attached to. This list is unmodifiable.
no setterinherited
sync → bool
Whether the stream is synchronous.
no setterinherited
type → String?
final

Methods

accepts(Event event) → bool
inherited
addTo(EventEmitter emitter) → This

Available on This, provided by the EventListenerAddTo extension

any(bool test(Event element)) → Future<bool>
Checks whether test accepts any element provided by this stream.
inherited
asBroadcastStream({void onListen(StreamSubscription<Event> subscription)?, void onCancel(StreamSubscription<Event> subscription)?}) → Stream<Event>
Returns a multi-subscription stream that produces the same events as this.
inherited
asyncExpand<E>(Stream<E>? convert(Event event)) → Stream<E>
Transforms each element into a sequence of asynchronous events.
inherited
asyncMap<E>(FutureOr<E> convert(Event event)) → Stream<E>
Creates a new stream with each data event of this stream asynchronously mapped to a new event.
inherited
attached(Subject<Event> subject) → void
This method is called whenever the observer is attached to a subject.
inherited
call(Subject<Event> subject, Event state) → void
inherited
cancel() → bool
Cancels the observer.
inherited
cast<R>() → Stream<R>
Adapt this stream to be a Stream<R>.
inherited
contains(Object? needle) → Future<bool>
Returns whether needle occurs in the elements provided by this stream.
inherited
detached(Subject<Event> subject) → void
This method is called whenever the observer is detached from a subject.
inherited
distinct([bool equals(Event previous, Event next)?]) → Stream<Event>
Skips data events if they are equal to the previous data event.
inherited
drain<E>([E? futureValue]) → Future<E>
Discards all data on this stream, but signals when it is done or an error occurred.
inherited
elementAt(int index) → Future<Event>
Returns the value of the indexth data event of this stream.
inherited
every(bool test(Event element)) → Future<bool>
Checks whether test accepts all elements provided by this stream.
inherited
expand<S>(Iterable<S> convert(Event element)) → Stream<S>
Transforms each element of this stream into a sequence of elements.
inherited
firstWhere(bool test(Event element), {Event orElse()?}) → Future<Event>
Finds the first element of this stream matching test.
inherited
fold<S>(S initialValue, S combine(S previous, Event element)) → Future<S>
Combines a sequence of values by repeatedly applying combine.
inherited
forEach(void action(Event element)) → Future<void>
Executes action on each element of this stream.
inherited
handleError(Function onError, {bool test(dynamic error)?}) → Stream<Event>
Creates a wrapper Stream that intercepts some errors from this stream.
inherited
join([String separator = ""]) → Future<String>
Combines the string representation of elements into a single string.
inherited
lastWhere(bool test(Event element), {Event orElse()?}) → Future<Event>
Finds the last element in this stream matching test.
inherited
listen(void onData(Event event)?, {Function? onError, void onDone()?, bool? cancelOnError}) → StreamSubscription<Event>
Adds a subscription to this stream.
inherited
map<S>(S convert(Event event)) → Stream<S>
Transforms each element of this stream into a new stream event.
inherited
matches<S extends Event>({String? type, EventCallback<S>? callback, bool? protected, bool? once}) → bool
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pipe(StreamConsumer<Event> streamConsumer) → Future
Pipes the events of this stream into streamConsumer.
inherited
reduce(Event combine(Event previous, Event element)) → Future<Event>
Combines a sequence of values by repeatedly applying combine.
inherited
singleWhere(bool test(Event element), {Event orElse()?}) → Future<Event>
Finds the single element in this stream matching test.
inherited
skip(int count) → Stream<Event>
Skips the first count data events from this stream.
inherited
skipWhile(bool test(Event element)) → Stream<Event>
Skip data events from this stream while they are matched by test.
inherited
take(int count) → Stream<Event>
Provides at most the first count data events of this stream.
inherited
takeWhile(bool test(Event element)) → Stream<Event>
Forwards data events while test is successful.
inherited
timeout(Duration timeLimit, {void onTimeout(EventSink<Event> sink)?}) → Stream<Event>
Creates a new stream with the same events as this stream.
inherited
toList() → Future<List<Event>>
Collects all elements of this stream in a List.
inherited
toSet() → Future<Set<Event>>
Collects the data of this stream in a Set.
inherited
toString() → String
A string representation of this object.
inherited
transform<S>(StreamTransformer<Event, S> streamTransformer) → Stream<S>
Applies streamTransformer to this stream.
inherited
update(Subject<Event> subject, Event state) → void
This method is called whenever there is a change in the state of the Subject.
override
where(bool test(Event event)) → Stream<Event>
Creates a new stream from this stream that discards some elements.
inherited

Operators

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