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Bug 330834

Summary: [Compatibility] IPageListeners are not being notified when a workbench page is closed
Product: [Eclipse Project] e4 Reporter: Remy Suen <remy.suen>
Component: UIAssignee: Remy Suen <remy.suen>
Status: VERIFIED FIXED QA Contact: Remy Suen <remy.suen>
Severity: normal    
Priority: P3    
Version: 1.0   
Target Milestone: 4.1 M5   
Hardware: All   
OS: All   
Whiteboard:
Attachments:
Description Flags
WorkbenchWindow patch v1 none

Description Remy Suen CLA 2010-11-22 12:44:29 EST 
1. Open a text file.
2. Window > Close Perspective
3. The 'Back' tool item is still enabled. Click on it. You'll get some error dialogs.

java.lang.NullPointerException
	at org.eclipse.ui.internal.Workbench.setReference(Workbench.java:1680)
	at org.eclipse.ui.internal.Workbench.access$18(Workbench.java:1669)
	at org.eclipse.ui.internal.Workbench$30.handleEvent(Workbench.java:1620)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	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:135)
	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.setContext(PartImpl.java:528)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:457)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:554)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:516)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java:74)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	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:135)
	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.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:259)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:227)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:485)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:460)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:449)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:848)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2259)
	at org.eclipse.ui.internal.WorkbenchPage.access$14(WorkbenchPage.java:2221)
	at org.eclipse.ui.internal.WorkbenchPage$6.run(WorkbenchPage.java:2203)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2199)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2183)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2174)
	at org.eclipse.ui.internal.NavigationHistoryEntry.restoreLocation(NavigationHistoryEntry.java:66)
	at org.eclipse.ui.internal.NavigationHistory.gotoEntry(NavigationHistory.java:452)
	at org.eclipse.ui.internal.NavigationHistory.shiftEntry(NavigationHistory.java:517)
	at org.eclipse.ui.internal.NavigationHistory.backward(NavigationHistory.java:501)
	at org.eclipse.ui.internal.NavigationHistoryAction.run(NavigationHistoryAction.java:242)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:121)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:58)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:618)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:52)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:207)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:188)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:123)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:122)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemRenderer$8.widgetSelected(ToolItemRenderer.java:415)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:780)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:696)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:542)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:524)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

java.lang.NullPointerException
	at org.eclipse.ui.operations.OperationHistoryActionHandler.<init>(OperationHistoryActionHandler.java:213)
	at org.eclipse.ui.operations.UndoActionHandler.<init>(UndoActionHandler.java:46)
	at org.eclipse.ui.texteditor.AbstractTextEditor.createUndoRedoActions(AbstractTextEditor.java:5595)
	at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3563)
	at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:54)
	at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:438)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:97)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:48)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:193)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:618)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:52)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:793)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:773)
	at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:103)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:291)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:218)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:152)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:90)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:64)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:53)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:117)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:669)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:478)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:554)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:516)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java:74)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:41)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	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:135)
	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.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:259)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:227)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:485)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:460)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:449)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:848)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2259)
	at org.eclipse.ui.internal.WorkbenchPage.access$14(WorkbenchPage.java:2221)
	at org.eclipse.ui.internal.WorkbenchPage$6.run(WorkbenchPage.java:2203)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2199)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2183)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2174)
	at org.eclipse.ui.internal.NavigationHistoryEntry.restoreLocation(NavigationHistoryEntry.java:66)
	at org.eclipse.ui.internal.NavigationHistory.gotoEntry(NavigationHistory.java:452)
	at org.eclipse.ui.internal.NavigationHistory.shiftEntry(NavigationHistory.java:517)
	at org.eclipse.ui.internal.NavigationHistory.backward(NavigationHistory.java:501)
	at org.eclipse.ui.internal.NavigationHistoryAction.run(NavigationHistoryAction.java:242)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:121)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:58)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:618)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:52)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:207)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:188)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:123)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:122)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemRenderer$8.widgetSelected(ToolItemRenderer.java:415)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:780)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:696)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:542)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:524)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.SelectionService.selectionChanged(SelectionService.java:280)
	at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:164)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
	at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:162)
	at org.eclipse.jface.text.TextViewer.fireSelectionChanged(TextViewer.java:2729)
	at org.eclipse.jface.text.TextViewer.selectionChanged(TextViewer.java:2708)
	at org.eclipse.jface.text.TextViewer.setSelectedRange(TextViewer.java:2393)
	at org.eclipse.ui.texteditor.AbstractTextEditor.selectAndReveal(AbstractTextEditor.java:6302)
	at org.eclipse.ui.texteditor.AbstractTextEditor.selectAndReveal(AbstractTextEditor.java:6273)
	at org.eclipse.ui.texteditor.TextSelectionNavigationLocation.restoreLocation(TextSelectionNavigationLocation.java:254)
	at org.eclipse.ui.internal.NavigationHistoryEntry.restoreLocation(NavigationHistoryEntry.java:81)
	at org.eclipse.ui.internal.NavigationHistory.gotoEntry(NavigationHistory.java:452)
	at org.eclipse.ui.internal.NavigationHistory.shiftEntry(NavigationHistory.java:517)
	at org.eclipse.ui.internal.NavigationHistory.backward(NavigationHistory.java:501)
	at org.eclipse.ui.internal.NavigationHistoryAction.run(NavigationHistoryAction.java:242)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:121)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:58)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:618)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:52)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:207)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:188)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:123)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:122)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemRenderer$8.widgetSelected(ToolItemRenderer.java:415)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:780)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:696)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:542)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:524)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)

java.lang.NullPointerException
	at org.eclipse.ui.texteditor.AbstractTextEditor.markInNavigationHistory(AbstractTextEditor.java:6329)
	at org.eclipse.ui.texteditor.AbstractTextEditor.selectAndReveal(AbstractTextEditor.java:6304)
	at org.eclipse.ui.texteditor.AbstractTextEditor.selectAndReveal(AbstractTextEditor.java:6273)
	at org.eclipse.ui.texteditor.TextSelectionNavigationLocation.restoreLocation(TextSelectionNavigationLocation.java:254)
	at org.eclipse.ui.internal.NavigationHistoryEntry.restoreLocation(NavigationHistoryEntry.java:81)
	at org.eclipse.ui.internal.NavigationHistory.gotoEntry(NavigationHistory.java:452)
	at org.eclipse.ui.internal.NavigationHistory.shiftEntry(NavigationHistory.java:517)
	at org.eclipse.ui.internal.NavigationHistory.backward(NavigationHistory.java:501)
	at org.eclipse.ui.internal.NavigationHistoryAction.run(NavigationHistoryAction.java:242)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:121)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:58)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:618)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:52)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:207)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:188)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:123)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:122)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemRenderer$8.widgetSelected(ToolItemRenderer.java:415)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:780)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:696)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:542)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:524)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.SelectionService.selectionChanged(SelectionService.java:280)
	at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2746)
	at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2694)
	at org.eclipse.jface.text.TextViewer$5.run(TextViewer.java:2673)
	at org.eclipse.swt.widgets.Display.runTimer(Display.java:4185)
	at org.eclipse.swt.widgets.Display.messageProc(Display.java:3274)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2461)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:780)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:696)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:542)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:524)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
Comment 1 Remy Suen CLA 2011-01-11 14:18:15 EST 
It seems that we are not firing notifying a window's IPageListeners that the workbench page has been closed in step 3.
Comment 2 Remy Suen CLA 2011-01-11 14:28:37 EST 
Created attachment 186547 [details]
WorkbenchWindow patch v1
Comment 3 Remy Suen CLA 2011-01-11 14:29:40 EST 
(In reply to comment #2)
> Created attachment 186547 [details]
> WorkbenchWindow patch v1

Fix released to CVS HEAD.
Comment 4 Remy Suen CLA 2011-01-26 08:07:34 EST 
Verified with I20110125-2200 on Windows XP.