AsyncTracker class

Tracks async callbacks (e.g. microtask, Future, Stream, Timer) and indicates when any of these has completed their executions. It can be used to track and react on async event chains.

Clients of the AsyncTracker either listen on the stream or they can add or remove listeners that receive these events.

Constructors

AsyncTracker({Zone? zone, Duration? duration})
When duration is specified, the tracking event is schedule via a Timer in the original zone, otherwise it is scheduled via a microtask.

Properties

hashCode → int
The hash code for this object.
no setterinherited
isActive → bool
Whether currently it has a running or scheduled code that will be executed in the current turn.
no setter
parentZone → Zone
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream
no setter
trackedZone → Zone
no setter

Methods

addListener(Function callback) → void
Add event listener that will get called when the tracker emits an event.
close() → Future
Closes the tracker and doesn't accept new listeners.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeListener(Function callback) → void
Remove previously added event listener.
run<R>(R fn()) → R
Runs fn in the tracked zone.
toString() → String
A string representation of this object.
inherited

Operators

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