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Bug 360796

Summary:	NullPointerException in the method addDisposeListener
Product:	z_Archived	Reporter:	Benjamin Bihler <benjamin.bihler>
Component:	Nebula	Assignee:	Emil Crumhorn <emil.crumhorn>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	normal
Priority:	P3	CC:	manju.mathew, wim.jongman
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:

Description Benjamin Bihler

2011-10-13 07:22:23 EDT

Build Identifier: 20110916-0149

When using the CalendarCombo with GTK/Linux it happens that the constructors of the super class add a DisposeListener to the CalendarCombo. But the init-method has not been called yet, so the field mComboControl is still null and a NullPointerException occurs.

java.lang.NullPointerException
	at org.eclipse.nebula.widgets.calendarcombo.CalendarCombo.addDisposeListener(CalendarCombo.java:1669)
	at org.eclipse.swt.accessibility.Accessible.<init>(Accessible.java:115)
	at org.eclipse.swt.accessibility.Accessible.internal_new_Accessible(Accessible.java:514)
	at org.eclipse.swt.widgets.Control._getAccessible(Control.java:687)
	at org.eclipse.swt.widgets.Label.addRelation(Label.java:111)
	at org.eclipse.swt.widgets.Control.setRelations(Control.java:1069)
	at org.eclipse.swt.widgets.Control.createWidget(Control.java:577)
	at org.eclipse.swt.widgets.Scrollable.createWidget(Scrollable.java:152)
	at org.eclipse.swt.widgets.Control.<init>(Control.java:97)
	at org.eclipse.swt.widgets.Scrollable.<init>(Scrollable.java:74)
	at org.eclipse.swt.widgets.Composite.<init>(Composite.java:95)
	at org.eclipse.nebula.widgets.calendarcombo.CalendarCombo.<init>(CalendarCombo.java:183)
	at com.twt.tfc.gui.filter.widgets.FromToCalendarPropertyComposite.<init>(FromToCalendarPropertyComposite.java:65)
	at com.twt.tfc.gui.filter.PropertyCompositesFactory.createCalendarControl(PropertyCompositesFactory.java:186)
	at com.twt.tfc.gui.filter.PropertyCompositesFactory.createControlForProperty(PropertyCompositesFactory.java:87)
	at com.twt.co2mo.gui.views.filters.vehicleFilterView.PropertyFilterComposite.createContents(PropertyFilterComposite.java:82)
	at com.twt.co2mo.gui.views.filters.vehicleFilterView.PropertyFilterComposite.<init>(PropertyFilterComposite.java:48)
	at com.twt.co2mo.gui.views.filters.vehicleFilterView.VehicleFilterView.createPartControl(VehicleFilterView.java:108)
	at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
	at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
	at org.eclipse.ui.internal.Perspective.showFastView(Perspective.java:2171)
	at org.eclipse.ui.internal.Perspective.setActiveFastView(Perspective.java:1939)
	at org.eclipse.ui.internal.Perspective.setActiveFastView(Perspective.java:1952)
	at org.eclipse.ui.internal.Perspective.toggleFastView(Perspective.java:2367)
	at org.eclipse.ui.internal.WorkbenchPage.toggleFastView(WorkbenchPage.java:3972)
	at org.eclipse.ui.internal.ShowFastViewContribution.showView(ShowFastViewContribution.java:157)
	at org.eclipse.ui.internal.ShowFastViewContribution.access$1(ShowFastViewContribution.java:155)
	at org.eclipse.ui.internal.ShowFastViewContribution$3.widgetSelected(ShowFastViewContribution.java:138)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3588)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	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 com.twt.co2mo.gui.Application.start(Application.java:65)
	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)

Reproducible: Always

Steps to Reproduce:
1. Use Linux/GTK
2. Try to create an instance of CalendarCombo by calling new CalendarCombo( propertyParent, SWT.DROP_DOWN )

Comment 1 Manju Mathew

2012-09-10 04:10:33 EDT

I am also getting the exact same NPE. Is there any fix for this issue?

Comment 2 Wim Jongman

2013-06-21 16:12:13 EDT

CalendarCombo will be archived june 30 2013.
Please update your software to use Nebula CDateTime or SWT DateTime.
Closing as WONTFIX.