LocalWorker<W extends WorkerService> class
abstract
Base local worker class.
Local workers are similar to other Workers except that they run in the context of the current thread. They do not create any platform thread (such as Isolate or Web Worker) but they provide a channel that can be shared with other workers to support communication between threads. One interesting use-case is accessing UI components or platform plugins in Flutter, where only code running in the main thread is allowed access to such features. Creating a LocalWorker in the main application and sharing its channel with other workers enables providing access to Flutter features.
Local workers wrap around a WorkerService. Messages sent to the local worker are deserialized as
WorkerRequest and dispatched to a handler defined in the service's WorkerService.operations map
according to the WorkerRequest.command.
- Implemented types
Constructors
- LocalWorker(W service)
- LocalWorker.create(W service)
-
factory
Properties
- channel → Channel?
-
The local worker's Channel.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
-
operations
→ Map<
int, CommandHandler> -
Local Workers do not need an operations map.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- service → W
-
The WorkerService associated to this local worker.
final
-
A Channel to communicate with this local worker. This channel should be provided to clients so they can
invoke services from the local worker.
no setter
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
stop(
) → void - Stops the local worker.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited