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Bug 338756

Summary:	NPE in AbstractCSSEngine
Product:	[Eclipse Project] e4	Reporter:	Thomas Schindl <tom.schindl>
Component:	UI	Assignee:	Project Inbox <e4.ui-inbox>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	gheorghe
Version:	1.0
Target Milestone:	---
Hardware:	PC
OS:	Mac OS X - Carbon (unsup.)
Whiteboard:	stalebug

Description Thomas Schindl

2011-03-02 17:54:16 EST

Running the CSS-Stuff in 3.x somehow leads to an NPE.

!ENTRY org.eclipse.ui 4 0 2011-03-02 23:49:49.203
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
	at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.getElement(AbstractCSSEngine.java:801)
	at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:308)
	at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:297)
	at org.eclipse.e4.ui.css.swt.engine.CSSSWTApplyStylesListener$1.handleEvent(CSSSWTApplyStylesListener.java:31)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4054)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4047)
	at org.eclipse.swt.widgets.Display.runSkin(Display.java:4014)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3526)
	at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)

The widget in question is an SWT-Menu
	at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1599)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4539)
	at org.eclipse.ui.internal.StartupThreading.runWithoutExceptions(StartupThreading.java:94)
	at org.eclipse.ui.internal.Workbench.init(Workbench.java:1594)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2624)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2495)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at at.bestsolution.app3x.Application.start(Application.java:20)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Exception in thread "Thread-3" org.eclipse.swt.SWTException: Device is disposed
	at org.eclipse.swt.SWT.error(SWT.java:4209)
	at org.eclipse.swt.SWT.error(SWT.java:4124)
	at org.eclipse.swt.SWT.error(SWT.java:4095)
	at org.eclipse.swt.widgets.Display.error(Display.java:1068)
	at org.eclipse.swt.widgets.Display.wake(Display.java:4711)
	at org.eclipse.ui.application.WorkbenchAdvisor$1.run(WorkbenchAdvisor.java:797)

Comment 1 Thomas Schindl

2011-03-03 11:42:07 EST

Just in case it matters the type it tries to style is an SWT-Menu, not sure why but it does think this needs styling ;-)

I'll release a null guard for now but leave the bug open if you think there's a deeper reason on why this fails

Comment 2 Eclipse Genie

2019-04-27 15:42:40 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet.

If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.

--
The automated Eclipse Genie.

Comment 3 Lars Vogel

2019-06-05 07:31:30 EDT

This is a mass change to close all e4 bugs marked with "stalebug" whiteboard.

If this bug is still valid, please reopen and remove the "stalebug" keyword.