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ElementStream<T extends Event> class

A specialized Stream available to Elements to enable event delegation.

Implemented types

• Stream<T>

Constructors

ElementStream()

Properties

first → Future<T>

read-only, inherited

The first element of this stream. [...]

hashCode → int

read-only, inherited

The hash code for this object. [...]

isBroadcast → bool

read-only, inherited

Whether this stream is a broadcast stream.

isEmpty → Future<bool>

read-only, inherited

Whether this stream contains any elements. [...]

last → Future<T>

read-only, inherited

The last element of this stream. [...]

length → Future<int>

read-only, inherited

The number of elements in this stream. [...]

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

single → Future<T>

read-only, inherited

The single element of this stream. [...]

Methods

any(bool test(T element)) → Future<bool>

inherited

Checks whether test accepts any element provided by this stream. [...]

asBroadcastStream({void onListen(StreamSubscription<T> subscription), void onCancel(StreamSubscription<T> subscription)}) → Stream<T>

inherited

Returns a multi-subscription stream that produces the same events as this. [...]

asyncExpand<E>(Stream<E>? convert(T event)) → Stream<E>

inherited

Transforms each element into a sequence of asynchronous events. [...]

asyncMap<E>(FutureOr<E> convert(T event)) → Stream<E>

inherited

Creates a new stream with each data event of this stream asynchronously mapped to a new event. [...]

capture(void onData(T event)) → StreamSubscription<T>

Adds a capturing subscription to this stream. [...]

cast<R>() → Stream<R>

inherited

Adapt this stream to be a Stream<R>. [...]

contains(Object? needle) → Future<bool>

inherited

Returns whether needle occurs in the elements provided by this stream. [...]

distinct([bool equals(T previous, T next)]) → Stream<T>

inherited

Skips data events if they are equal to the previous data event. [...]

drain<E>([E? futureValue]) → Future<E>

inherited

Discards all data on this stream, but signals when it is done or an error occurred. [...]

elementAt(int index) → Future<T>

inherited

Returns the value of the indexth data event of this stream. [...]

every(bool test(T element)) → Future<bool>

inherited

Checks whether test accepts all elements provided by this stream. [...]

expand<S>(Iterable<S> convert(T element)) → Stream<S>

inherited

Transforms each element of this stream into a sequence of elements. [...]

firstWhere(bool test(T element), {T orElse()}) → Future<T>

inherited

Finds the first element of this stream matching test. [...]

fold<S>(S initialValue, S combine(S previous, T element)) → Future<S>

inherited

Combines a sequence of values by repeatedly applying combine. [...]

forEach(void action(T element)) → Future

inherited

Executes action on each element of this stream. [...]

handleError(Function onError, {bool test(dynamic error)}) → Stream<T>

inherited

Creates a wrapper Stream that intercepts some errors from this stream. [...]

join([String separator = ""]) → Future<String>

inherited

Combines the string representation of elements into a single string. [...]

lastWhere(bool test(T element), {T orElse()}) → Future<T>

inherited

Finds the last element in this stream matching test. [...]

listen(void onData(T event), {Function? onError, void onDone(), bool? cancelOnError}) → StreamSubscription<T>

inherited

Adds a subscription to this stream. [...]

map<S>(S convert(T event)) → Stream<S>

inherited

Transforms each element of this stream into a new stream event. [...]

matches(String selector) → Stream<T>

Return a stream that only fires when the particular event fires for elements matching the specified CSS selector. [...]

noSuchMethod(Invocation invocation) → dynamic

inherited

Invoked when a non-existent method or property is accessed. [...]

pipe(StreamConsumer<T> streamConsumer) → Future

inherited

Pipes the events of this stream into streamConsumer. [...]

reduce(T combine(T previous, T element)) → Future<T>

inherited

Combines a sequence of values by repeatedly applying combine. [...]

singleWhere(bool test(T element), {T orElse()}) → Future<T>

inherited

Finds the single element in this stream matching test. [...]

skip(int count) → Stream<T>

inherited

Skips the first count data events from this stream. [...]

skipWhile(bool test(T element)) → Stream<T>

inherited

Skip data events from this stream while they are matched by test. [...]

take(int count) → Stream<T>

inherited

Provides at most the first count data events of this stream. [...]

takeWhile(bool test(T element)) → Stream<T>

inherited

Forwards data events while test is successful. [...]

timeout(Duration timeLimit, {void onTimeout(EventSink<T> sink)}) → Stream<T>

inherited

Creates a new stream with the same events as this stream. [...]

toList() → Future<List<T>>

inherited

Collects all elements of this stream in a List. [...]

toSet() → Future<Set<T>>

inherited

Collects the data of this stream in a Set. [...]

toString() → String

inherited

A string representation of this object. [...]

transform<S>(StreamTransformer<T, S> streamTransformer) → Stream<S>

inherited

Applies streamTransformer to this stream. [...]

where(bool test(T event)) → Stream<T>

inherited

Creates a new stream from this stream that discards some elements. [...]

Operators

operator ==(Object other) → bool

inherited

The equality operator. [...]