Is VBox serializable? (original) (raw)

John McDonnell mcdonnell.john at gmail.com
Sat Oct 6 05:10:12 PDT 2012

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

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