NotificationPane not working with default constructor

[JonathanGiles]

Original report by Hendrik Ebbers (Bitbucket: hendrikebbers, GitHub: hendrikebbers).

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When creating the NotificationPane with
notificationPane = new NotificationPane();
a exception is thrown when the scene will be shown.

Workaround: Everything is fine when I add a dummy content node:
notificationPane = new NotificationPane(new StackPane());

Here is the StackTrace:

Caused by: java.lang.NullPointerException: Children: child node is null: parent = NotificationPane@736b303e[styleClass=notification-pane]
at javafx.scene.Parent$2.onProposedChange(Parent.java:423)
at com.sun.javafx.collections.VetoableListDecorator.setAll(VetoableListDecorator.java:115)
at com.sun.javafx.collections.VetoableListDecorator.setAll(VetoableListDecorator.java:110)
at impl.org.controlsfx.skin.NotificationPaneSkin.updateContent(NotificationPaneSkin.java:106)
at impl.org.controlsfx.skin.NotificationPaneSkin.(NotificationPaneSkin.java:69)
at org.controlsfx.control.NotificationPane.createDefaultSkin(NotificationPane.java:248)
at javafx.scene.control.Control.impl_processCSS(Control.java:869)
at javafx.scene.Parent.impl_processCSS(Parent.java:1204)
at javafx.scene.Node.processCSS(Node.java:8545)
at javafx.scene.Scene.doCSSPass(Scene.java:543)
at javafx.scene.Scene.preferredSize(Scene.java:1581)
at javafx.scene.Scene.impl_preferredSize(Scene.java:1648)
at javafx.stage.Window$9.invalidated(Window.java:730)
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:108)
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:142)
at javafx.stage.Window.setShowing(Window.java:796)
at javafx.stage.Window.show(Window.java:811)
at javafx.stage.Stage.show(Stage.java:243)
at com.guigarage.testimpl.TestMainApplication.start(TestMainApplication.java:11)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:810)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:260)
at com.sun.javafx.application.PlatformImpl$5$1.run(PlatformImpl.java:226)
at com.sun.javafx.application.PlatformImpl$5$1.run(PlatformImpl.java:223)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:223)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
Exception running application com.guigarage.testimpl.TestMainApplication

Java Version:
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b94)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b36, mixed mode)

[JonathanGiles]

Original comment by Jonathan Giles (Bitbucket: JonathanGiles, GitHub: JonathanGiles).

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Thanks for the bug report, I'll fix it ASAP.

[JonathanGiles]

Original comment by Jonathan Giles (Bitbucket: JonathanGiles, GitHub: JonathanGiles).

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The NotificationPane is intended to wrap some content, which is either passed in to the constructor or to the setContent(Node) method. I've updated the skin code to not throw exceptions when the content is null, but of course this makes the NotificationPane useless :-)