Is VBox serializable?

[John McDonnell]

Hey all.

I am working adding some drag and drop functionality to a project I have,
where I have a list of nodes, and I would like a user to be able to drag a
item from a list and drop it elsewhere within the scene.

When displaying the items in the list cells, I have a Region,
TrafficListingItem, which contains a VBox.  When I add the
TrafficListingItem to the Dragboard, I get an the following error:

Exception in thread "JavaFX Application Thread"
java.lang.IllegalArgumentException: Could not serialize the data
at
com.sun.javafx.tk.quantum.QuantumClipboard.putContent(QuantumClipboard.java:500)
at javafx.scene.input.Clipboard.setContent(Clipboard.java:226)
at
ie.john.client.core.platform.TrafficListingItem.drag(TrafficListingItem.java:105)
at
ie.john.client.main.controller.MainPaneController$TrafficCell$1.handle(MainPaneController.java:101)
at
ie.john.client.main.controller.MainPaneController$TrafficCell$1.handle(MainPaneController.java:96)
at
com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:69)
at
com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217)
at
com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170)
at
com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:38)
at
com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37)
at
com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
at
com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
at
com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:33)
at javafx.event.Event.fireEvent(Event.java:171)
at javafx.scene.Scene$DnDGesture.fireEvent(Scene.java:2627)
at javafx.scene.Scene$DnDGesture.process(Scene.java:2706)
at javafx.scene.Scene$DnDGesture.access$8700(Scene.java:2603)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3340)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3164)
at javafx.scene.Scene$MouseHandler.access$1900(Scene.java:3119)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1559)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2261)
at
com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:228)
at com.sun.glass.ui.View.handleMouseEvent(View.java:528)
at com.sun.glass.ui.View.notifyMouse(View.java:922)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication$3$1.run(GtkApplication.java:82)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.io.NotSerializableException: javafx.scene.layout.VBox
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
com.sun.javafx.tk.quantum.QuantumClipboard.putContent(QuantumClipboard.java:496)
... 81 more


It appears as though VBox is not serialisable?  Is this correct?  If it is
how would one go about dragging a node that contains a VBox within the
Drag/Drop Events system of JavaFX?


-- 
John