This appears to be a bug introduced in JavaFX 8 I have filed https://javafx-jira.kenai.com/browse/RT-37252 and will work on a test case.
Scott On Thu, May 22, 2014 at 3:45 PM, Scott Palmer <swpal...@gmail.com> wrote: > I'm investigating an issue with my application where things are > working fine running with JavaFX 2.2 on 7u55, but I have a particular > case where 8u5 is throwing the following exception during layout: > > Exception in thread "JavaFX Application Thread" java.lang.NullPointerException > at javafx.scene.layout.GridPane.computeMinHeights(GridPane.java:1450) > at javafx.scene.layout.GridPane.computeMinHeight(GridPane.java:1224) > at javafx.scene.Parent.minHeight(Parent.java:946) > at javafx.scene.layout.Region.minHeight(Region.java:1404) > at javafx.scene.layout.Region.computeChildMinAreaHeight(Region.java:1700) > at javafx.scene.layout.Region.getMaxAreaHeight(Region.java:1981) > at javafx.scene.layout.Region.computeMaxMinAreaHeight(Region.java:1854) > at javafx.scene.layout.StackPane.computeMinHeight(StackPane.java:293) > at javafx.scene.Parent.minHeight(Parent.java:946) > at javafx.scene.layout.Region.minHeight(Region.java:1404) > at javafx.scene.layout.Region.computeChildPrefAreaHeight(Region.java:1765) > at javafx.scene.layout.Region.getMaxAreaHeight(Region.java:1982) > at javafx.scene.layout.Region.computeMaxPrefAreaHeight(Region.java:1884) > at javafx.scene.layout.StackPane.computePrefHeight(StackPane.java:310) > at javafx.scene.Parent.prefHeight(Parent.java:918) > at javafx.scene.layout.Region.prefHeight(Region.java:1438) > at > com.sun.javafx.scene.control.skin.TitledPaneSkin.computePrefHeight(TitledPaneSkin.java:249) > at javafx.scene.control.Control.computePrefHeight(Control.java:543) > at javafx.scene.Parent.prefHeight(Parent.java:918) > at javafx.scene.layout.Region.prefHeight(Region.java:1438) > at javafx.scene.layout.Region.computeChildPrefAreaHeight(Region.java:1765) > at javafx.scene.layout.GridPane.computePrefHeights(GridPane.java:1407) > at javafx.scene.layout.GridPane.computePrefHeight(GridPane.java:1242) > at javafx.scene.Parent.prefHeight(Parent.java:918) > at javafx.scene.layout.Region.prefHeight(Region.java:1438) > at > com.sun.javafx.scene.control.skin.ScrollPaneSkin.computeScrollNodeSize(ScrollPaneSkin.java:916) > at > com.sun.javafx.scene.control.skin.ScrollPaneSkin.layoutChildren(ScrollPaneSkin.java:791) > at javafx.scene.control.Control.layoutChildren(Control.java:574) > at javafx.scene.Parent.layout(Parent.java:1076) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Parent.layout(Parent.java:1082) > at javafx.scene.Scene.doLayoutPass(Scene.java:576) > at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2386) > at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:321) > at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:319) > at java.security.AccessController.doPrivileged(Native Method) > at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:319) > at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:348) > at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:479) > at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:460) > at com.sun.javafx.tk.quantum.QuantumToolkit$13.run(QuantumToolkit.java:327) > at > com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) > at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) > at com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39) > at com.sun.glass.ui.win.WinApplication$4$1.run(WinApplication.java:112) > at java.lang.Thread.run(Thread.java:745) > > As you can see, it's all JavaFX code on the stack, so this is a little > tricky to debug. As such I'm not sure yet if this is a JavaFX bug > introduced with 8.0 or an application bug that was masked in JavaFX > 2.2 and is now showing up in JavaFX 8. > > This happens when the managed/visible state of children changes.. but > I think it only for the case when all the children become unmanaged. > > Once it happens JavaFX is crippled and pretty much all layout is > broken. Popups (menus) still work and I can exit the application, but > all layout in the main window seems to not happen anymore. Manual > positioning of nodes still works though. > > I'll try to isolate a reproducible test case and file a bug report of course. > > Scott
