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Bug 327658 - NPE in ActionBars after closing a Java editor
Summary: NPE in ActionBars after closing a Java editor
Status: RESOLVED WORKSFORME
Alias: None
Product: e4
Classification: Eclipse Project
Component: UI (show other bugs)
Version: 1.0   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Project Inbox CLA
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Reported: 2010-10-13 08:58 EDT by Remy Suen CLA
Modified: 2011-05-06 09:42 EDT (History)
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Description Remy Suen CLA 2010-10-13 08:58:18 EDT 
1. Launch an inner with the code from HEAD.
2. Open the 'Outline' view if it isn't already open.
3. Open a file that supports the 'Outline' view like a Java file.
4. Close the file.
5. An NPE occurs. This is consistently reproducible in the same instance (not a one-shot NPE).

java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.ActionBars.updateActionBars(ActionBars.java:98)
	at org.eclipse.ui.part.PageBookView.showPageRec(PageBookView.java:1015)
	at org.eclipse.ui.views.contentoutline.ContentOutline.showPageRec(ContentOutline.java:251)
	at org.eclipse.ui.part.PageBookView.partClosed(PageBookView.java:781)
	at org.eclipse.ui.part.PageBookView$4.partClosed(PageBookView.java:1043)
	at org.eclipse.ui.internal.WorkbenchPage.firePartClosed(WorkbenchPage.java:3081)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart$1.handleEvent(CompatibilityPart.java:86)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:188)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:198)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:139)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:73)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380)
	at org.eclipse.e4.ui.model.application.ui.basic.impl.PartImpl.setWidget(PartImpl.java:510)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.unbindWidget(SWTPartRenderer.java:113)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.disposeWidget(SWTPartRenderer.java:133)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:588)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.handleEvent(PartRenderingEngine.java:130)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:188)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:198)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:139)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:73)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380)
	at org.eclipse.e4.ui.model.application.ui.basic.impl.PartImpl.setToBeRendered(PartImpl.java:552)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:841)
	at org.eclipse.ui.internal.WorkbenchPage.hidePart(WorkbenchPage.java:986)
	at org.eclipse.ui.internal.WorkbenchPage.closeEditors(WorkbenchPage.java:886)
	at org.eclipse.ui.internal.WorkbenchPage.closeEditor(WorkbenchPage.java:1042)
	at org.eclipse.ui.internal.CloseEditorHandler.execute(CloseEditorHandler.java:47)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:58)
Comment 1 Paul Webster CLA 2011-05-06 09:42:08 EDT 
Probably fixed by some other changes.

PW