MultiStreamController<T> class
Null safety
An enhanced stream controller provided by Stream.multi.
Acts like a normal asynchronous controller, but also allows adding events synchronously. As with any synchronous event delivery, the sender should be very careful to not deliver events at times when a new listener might not be ready to receive them. That generally means only delivering events synchronously in response to other asynchronous events, because that is a time when an asynchronous event could happen.
- Implemented types
- Annotations
- @Since("2.9")
Constructors
Properties
- done → Future
-
A future which is completed when the stream controller is done
sending events. [...]
read-only, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- hasListener → bool
-
Whether there is a subscriber on the Stream.
read-only, inherited
- isClosed → bool
-
Whether the stream controller is closed for adding more events. [...]
read-only, inherited
- isPaused → bool
-
Whether the subscription would need to buffer events. [...]
read-only, inherited
-
onCancel
↔ (FutureOr<
void> Function?()?) -
The callback which is called when the stream is canceled. [...]
read / write, inherited
- onListen ↔ (void Function?()?)
-
The callback which is called when the stream is listened to. [...]
read / write, inherited
- onPause ↔ (void Function?()?)
-
The callback which is called when the stream is paused. [...]
read / write, inherited
- onResume ↔ (void Function?()?)
-
The callback which is called when the stream is resumed. [...]
read / write, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
-
sink
→ StreamSink<
T> -
Returns a view of this object that only exposes the StreamSink interface.
read-only, inherited
-
stream
→ Stream<
T> -
The stream that this controller is controlling.
read-only, inherited
Methods
-
add(
T event) → void -
Sends a data
event. [...]inherited -
addError(
Object error, [StackTrace? stackTrace]) → void -
Sends or enqueues an error event. [...]
inherited
-
addErrorSync(
Object error, [StackTrace? stackTrace]) → void - Adds and delivers an error event. [...]
-
addStream(
Stream< T> source, {bool? cancelOnError}) → Future -
Receives events from
sourceand puts them into this controller's stream. [...]inherited -
addSync(
T value) → void - Adds and delivers an event. [...]
-
close(
) → Future -
Closes the stream. [...]
inherited
-
closeSync(
) → void - Closes the controller and delivers a done event. [...]
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toString(
) → String -
A string representation of this object. [...]
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited