CODEWITHSUNDEEP
exceptionjavafxdialogjavafx-8
Punika
Punika

Reputation: 374

JavaFX dialog exception

I get an exception from my costum dialog right at the moment when I click the close button.

Exception in thread "JavaFX Application Thread" java.lang.IllegalStateException: Nested event loops are allowed only while handling system events
    at com.sun.javafx.tk.quantum.QuantumToolkit.enterNestedEventLoop(Unknown Source)
    at javafx.stage.Stage.showAndWait(Unknown Source)
    at javafx.scene.control.HeavyweightDialog.showAndWait(Unknown Source)
    at javafx.scene.control.Dialog.showAndWait(Unknown Source)
    at puni.view.CustomDialog.showReport(CustomDialog.java:251)
    at puni.view.OverviewController.showReportDialog(OverviewController.java:1088)
    at puni.view.OverviewController.startOverview(OverviewController.java:1136)
    at puni.view.OverviewController.access$0(OverviewController.java:1095)
    at puni.view.OverviewController$3.handle(OverviewController.java:538)
    at puni.view.OverviewController$3.handle(OverviewController.java:1)
    at javafx.animation.Animation.impl_finished(Unknown Source)
    at javafx.animation.AnimationAccessorImpl.finished(Unknown Source)
    at com.sun.scenario.animation.shared.SingleLoopClipEnvelope.timePulse(Unknown Source)
    at javafx.animation.Animation.impl_timePulse(Unknown Source)
    at javafx.animation.Animation$1.lambda$timePulse$26(Unknown Source)
    at javafx.animation.Animation$1$$Lambda$246/14625425.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at javafx.animation.Animation$1.timePulse(Unknown Source)
    at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(Unknown Source)
    at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$400(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit$$Lambda$40/6985548.run(Unknown Source)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
    at com.sun.glass.ui.win.WinApplication$$Lambda$36/3326003.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)


Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Key not associated with a running event loop: javafx.scene.control.HeavyweightDialog$1@1a9ed1e
    at com.sun.javafx.tk.quantum.QuantumToolkit.exitNestedEventLoop(Unknown Source)
    at javafx.stage.Stage.impl_visibleChanged(Unknown Source)
    at javafx.stage.Window$9.invalidated(Unknown Source)
    at javafx.beans.property.BooleanPropertyBase.markInvalid(Unknown Source)
    at javafx.beans.property.BooleanPropertyBase.set(Unknown Source)
    at javafx.stage.Window.setShowing(Unknown Source)
    at javafx.stage.Window.hide(Unknown Source)
    at javafx.scene.control.HeavyweightDialog.close(Unknown Source)
    at javafx.scene.control.Dialog.close(Unknown Source)
    at puni.view.CustomDialog$1.handle(CustomDialog.java:222)
    at puni.view.CustomDialog$1.handle(CustomDialog.java:1)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Node.fireEvent(Unknown Source)
    at javafx.scene.control.Button.fire(Unknown Source)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.access$1500(Unknown Source)
    at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$350(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$$Lambda$258/29661310.get(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.notifyMouse(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
    at com.sun.glass.ui.win.WinApplication$$Lambda$36/3326003.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Upvotes: 2

Views: 1649

Answers (2)

pschichtel
pschichtel

Reputation: 779

I'm not an JavaFX expert, so this is mostly guessing:

The use of runLater() takes the action out of the event loop of the dialog window and moves it onto the main event loop of the application. This might prevent further nesting which seems to cause the problem.

The lack of information or code makes this kinda hard to understand.

Upvotes: 0

Punika
Punika

Reputation: 374

I solved the issue by using Platform.runLater();

Platform.runLater(new Runnable(){
    @Override
    public void run() {
        dialog.showAndWait();               
    }           
});

This works but is that a good solution and what is the background of the exception?

Upvotes: 3

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