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@viktorklang
Created April 19, 2012 17:25
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Swing Actors using Akka
// ©2012 Viktor Klang
package akka.klang
import akka.dispatch.{ DispatcherPrerequisites, ExecutorServiceFactory, ExecutorServiceConfigurator }
import com.typesafe.config.Config
import java.util.concurrent.{ ExecutorService, AbstractExecutorService, ThreadFactory, TimeUnit }
import java.util.Collections
import javax.swing.SwingUtilities
// First we wrap invokeLater as an ExecutorService
object SwingExecutorService extends AbstractExecutorService {
def execute(command: Runnable) = SwingUtilities.invokeLater(command)
def shutdown(): Unit = ()
def shutdownNow() = Collections.emptyList[Runnable]
def isShutdown = false
def isTerminated = false
def awaitTermination(l: Long, timeUnit: TimeUnit) = true
}
// Then we create an ExecutorServiceConfigurator so that Akka can use our SwingExecutorService for the dispatchers
class SwingEventThreadExecutorServiceConfigurator(config: Config, prerequisites: DispatcherPrerequisites) extends ExecutorServiceConfigurator(config, prerequisites) {
private val f = new ExecutorServiceFactory { def createExecutorService: ExecutorService = SwingExecutorService }
def createExecutorServiceFactory(id: String, threadFactory: ThreadFactory): ExecutorServiceFactory = f
}
// Then we simply need to create a dispatcher configuration in our application.conf
swing-dispatcher {
type = "Dispatcher"
executor = "akka.klang.SwingEventThreadExecutorServiceConfigurator"
throughput = 1
}
// After that we just create the GUI Actors with a Props with the correct dispatcher set:
val frameActor = context.actorOf(Props[FrameActor].withDispatcher("swing-dispatcher"), "frame-actor")
// Done! Now all messages processed by "frameActor" will be executed by the Swing Event Dispatch Thread, enjoy!
@Maatary
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Maatary commented Aug 10, 2014

Could you explain a bit better what you are doing here? The goal is to have an actor that can execute itself from within the UI Thread, To what be able to manipulate the UI, without using Platform.RunLater?

@vcaballero-salle
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I can't see how the FrameActor should be, can anyone give me a minimal example?

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