401321 – Null pointer exception seen while closing detached view

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Bug 401321 - Null pointer exception seen while closing detached view

Summary: Null pointer exception seen while closing detached view

Status:	RESOLVED WORKSFORME

Alias:	None

Product:	Platform
Classification:	Eclipse Project
Component:	UI (show other bugs)
Version:	4.2.2
Hardware:	PC Linux-GTK

Importance:	P3 normal (vote)
Target Milestone:	4.3.1
Assignee:	Daniel Rolka
QA Contact:

URL:
Whiteboard:
Keywords:

Duplicates (1):	409961 (view as bug list)
Depends on:
Blocks:

Reported:	2013-02-20 09:44 EST by Kalvin Misquith
Modified:	2014-01-21 16:44 EST (History)
CC List:	11 users (show)

See Also:

Attachments
Navigator Panel rendering incorrect - screenshot (296.07 KB, image/x-xcf) 2014-01-14 11:53 EST, Eddy Pulido	no flags	Details
Incorrectly rendered Navigator panel after java heap crash (140.00 KB, image/jpeg) 2014-01-21 16:19 EST, Eddy Pulido	no flags	Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Kalvin Misquith

2013-02-20 09:44:12 EST

I am using the following code to open up a detached property view from within an action. 


EPartService ePartService = (EPartService)Activator.getDefault().getWorkbench().getService(EPartService.class);
			
MPart mPart = ePartService.createPart("org.eclipse.ui.views.PropertySheet");
		 		
EModelService eModelService = (EModelService) Activator.getDefault().getWorkbench().getService(EModelService.class);
				
MPartSashContainerElement sharedRef = mPart.getCurSharedRef();
		 	    
MPartSashContainerElement mPartSash = (sharedRef != null) ? sharedRef : mPart;
		 	  
ePartService.showPart(mPart, PartState.ACTIVATE);
		 	
eModelService.detach( mPartSash, 50, 50, 1000, 200);


The detached property view opens up as expected. But I see the following null pointer exceptions on closing the detached view.  The context within the MPart is nullified in PartRenderingEngine.clearContext after which CompatilibilityView.disposeSite is called. CompatilibilityView.disposeSite retrieve the context from the MPart which is null.

!ENTRY org.eclipse.e4.ui.workbench 4 0 2013-02-19 21:28:28.862
!MESSAGE Exception occurred while unrendering: org.eclipse.e4.ui.model.application.ui.basic.impl.PartImpl@597a597a (elementId: org.eclipse.ui.views.PropertySheet, tags: [View, categoryTag:General], contributorURI: null) (widget: null, renderer: null, toBeRendered: false, onTop: false, visible: true, accessibilityPhrase: null) (contributionURI: bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView, object: null, context: null, variables: [], label: Properties, iconURI: platform:/plugin/org.eclipse.ui.views//icons/full/eview16/prop_ps.gif, tooltip: , dirty: false, closeable: true, description: null)
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:859)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:839)
	at org.eclipse.e4.core.internal.di.InjectorImpl.disposed(InjectorImpl.java:368)
	at org.eclipse.e4.core.internal.di.Requestor.disposed(Requestor.java:127)
	at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:76)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:107)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.handleInvalid(TrackableComputationExt.java:70)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.dispose(EclipseContext.java:170)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.clearContext(PartRenderingEngine.java:887)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:868)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$3(PartRenderingEngine.java:775)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$8.run(PartRenderingEngine.java:770)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:755)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.handleEvent(PartRenderingEngine.java:144)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4291)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:187)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	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:81)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1117)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1052)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.closeDetachedWindow(WBWRenderer.java:203)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.access$4(WBWRenderer.java:187)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer$8.close(WBWRenderer.java:510)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer$11.shellClosed(WBWRenderer.java:575)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:98)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1300)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1285)
	at org.eclipse.swt.widgets.Shell.closeWidget(Shell.java:617)
	at org.eclipse.swt.widgets.Shell.gtk_delete_event(Shell.java:1191)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1750)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:5116)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4369)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8307)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1192)
	at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
	at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2332)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3177)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	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:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
	at java.lang.reflect.Method.invoke(Method.java:611)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.disposeSite(CompatibilityView.java:248)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.internalDisposeSite(CompatibilityPart.java:388)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.invalidate(CompatibilityPart.java:216)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.destroy(CompatibilityPart.java:374)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
	at java.lang.reflect.Method.invoke(Method.java:611)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
	... 77 more

!ENTRY org.eclipse.e4.ui.workbench 4 0 2013-02-19 21:37:10.386
!MESSAGE Unable to create class 'org.eclipse.ui.internal.e4.compatibility.CompatibilityView' from bundle '725'
!STACK 0
org.eclipse.e4.core.di.InjectionException: org.eclipse.swt.SWTException: Graphic is disposed
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:859)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:839)
	at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:111)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:319)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:240)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:161)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:102)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:71)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:53)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:141)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:896)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:630)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:732)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:703)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:697)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:682)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1114)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java:67)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4291)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:187)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	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:81)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:103)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:646)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:732)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:703)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:697)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:682)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:59)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java:639)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:642)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:732)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:703)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:697)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:682)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.handleEvent(PartRenderingEngine.java:126)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4291)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:187)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	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:81)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
	at org.eclipse.e4.ui.workbench.addons.cleanupaddon.CleanupAddon$3.handleEvent(CleanupAddon.java:266)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4291)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:187)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	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:81)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
	at org.eclipse.e4.ui.workbench.addons.cleanupaddon.CleanupAddon$3.handleEvent(CleanupAddon.java:266)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4291)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:187)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	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:81)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:416)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:385)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:579)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:558)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:532)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:521)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:978)
	at org.eclipse.e4.ui.internal.workbench.ApplicationPartServiceImpl.showPart(ApplicationPartServiceImpl.java:111)
	at ActionHandler.openPropertiesPage(ActionHandler.java:91)
	at Runner.runInUIThread(Runner.java:90)
	at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3529)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3182)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	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:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
	at java.lang.reflect.Method.invoke(Method.java:611)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: org.eclipse.swt.SWTException: Graphic is disposed
	at org.eclipse.swt.SWT.error(SWT.java:4361)
	at org.eclipse.swt.SWT.error(SWT.java:4276)
	at org.eclipse.swt.SWT.error(SWT.java:4247)
	at org.eclipse.swt.graphics.Image.getBounds(Image.java:1067)
	at org.eclipse.swt.custom.CTabItem.setImage(CTabItem.java:370)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.updateTabImages(CompatibilityPart.java:359)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.updateImages(CompatibilityView.java:79)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:308)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
	at java.lang.reflect.Method.invoke(Method.java:611)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
	... 146 more

Comment 1 John Arthorne

2013-02-20 14:55:11 EST

It looks like the cause is the model element's context is already null at the point the part is being disposed:

Caused by: java.lang.NullPointerException
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.disposeSite(CompatibilityView.java:248)

Comment 2 Eric Moffatt

2013-03-01 15:41:22 EST

Kalvin, do you close the view itself by clicking on the *tab* or do you close the window itself using the red 'x' (I'm guessing the second).

We likely should be trapping the close event for the window and properly processing it through 'removeGui', my guess is that we end up in situations where the Shell gets disposed first, leading to odd race conditions...

Comment 3 Kalvin Misquith

2013-03-01 17:12:33 EST

(In reply to comment #2)
> Kalvin, do you close the view itself by clicking on the *tab* or do you
> close the window itself using the red 'x' (I'm guessing the second).
> 
> We likely should be trapping the close event for the window and properly
> processing it through 'removeGui', my guess is that we end up in situations
> where the Shell gets disposed first, leading to odd race conditions...

Yup, I close the window itself.

Comment 4 Dani Megert

2013-06-06 05:35:07 EDT

*** Bug 409961 has been marked as a duplicate of this bug. ***

Comment 5 Eric Moffatt

2013-07-15 15:30:11 EDT

Kalvin, does this problem still manifest for you using Kepler (4.3) ?

I've just tried this manually and don't see an NPE any more (I remember fixing something akin to this).

Comment 6 Kalvin Misquith

2013-07-15 15:58:39 EDT

I no longer see this issue in 4.2.2. Feel free to close.

Comment 7 Eric Moffatt

2013-07-16 10:56:23 EDT

Thanks Kalvin...done...

Comment 8 Nobuhiko Yasunaka

2013-09-17 11:24:47 EDT

This bug still happens in Kepler (4.3), I'm getting the same error message when I close my RCP app with x button on Windows 7, and MacOSX(10.8.4, x64).
I tried to chase this bug with debugger and I found followings.

See PartRenderingEngine.clearContext(MContext), the last 2 lines,
     ctxt.setContext(null); ... (*)
     lclContext.dispose();
In the first code, the IEclipseContext context of PartImpl is set to null, and the next step, dispose() causes to call the CompatibilityView.disposeSite().

In the CompatibilityView.disposeSite(), at the first step,
　　　　IEclipseContext context = getModel().getContext();
　　　　IRendererFactory rendererFactory = context.get(IRendererFactory.class);
The 'context' has already been set to null at the (*) point.

Comment 9 Dani Megert

2013-09-18 03:43:50 EDT

(In reply to Nobuhiko Yasunaka from comment #8)
> This bug still happens in Kepler (4.3), I'm getting the same error message
> when I close my RCP app with x button on Windows 7, and MacOSX(10.8.4, x64).
> I tried to chase this bug with debugger and I found followings.
> 
> See PartRenderingEngine.clearContext(MContext), the last 2 lines,
>      ctxt.setContext(null); ... (*)
>      lclContext.dispose();
> In the first code, the IEclipseContext context of PartImpl is set to null,
> and the next step, dispose() causes to call the
> CompatibilityView.disposeSite().
> 
> In the CompatibilityView.disposeSite(), at the first step,
> 　　　　IEclipseContext context = getModel().getContext();
> 　　　　IRendererFactory rendererFactory = context.get(IRendererFactory.class);
> The 'context' has already been set to null at the (*) point.

Could you provide a sample app that demonstrates the problem?

Comment 10 Nobuhiko Yasunaka

2013-10-11 06:15:39 EDT

This was caused when a View was created twice illegally behind the actual View. 
My application code based Eclipse 3.6 controlled Views visibility at the beginning of Application (in postWindowOpen() of WorkbenchWindowAdvisor), and I used IWorkbenchPage#showView(String viewId) or IWorkbenchPage#hideView(IViewPart view) to control it.

On the Eclipse 3.6 platform, it works fine because the IWorkbenchPage was created before the show/hide point, but after I migrate it into Eclipse 4.3 platform, the timing of View creating was changed and the View is not created at the show/hide control point. IWorkbenchPage#showView(String viewId) creates a View if the View is not created at that point, and the View created by showView() remains behind the actual View. And the invisible View caused this matter.

After I adjust the control point, this null pointer exception is fixed. So, this problem causes under the special case and it may be not a bug, but somebody who are migrating the RCP code into Eclipse 4.3 may encounter　with this matter.

Comment 11 Eddy Pulido

2014-01-14 11:53:39 EST

Created attachment 238974 [details]
Navigator Panel rendering incorrect - screenshot

I'm using Kepler and I just updated to the latest code base.  When this problem occurs, if I try to do anything inside the navigator panel; list a project files, or properties, or anything, I get a java heap exception.  Not always, but in most cases.  

I don't need to do anything special, but maybe execute two operations on the folders or files in the panel in rapid sequence, sometimes w/o intending to do so, and voila, eclipse will crash and render the navigator panel incorrectly, as shown in the screen capture.  After that occurs, launching the navigator browser(panel) again will continue to render it incorrectly.  After a while, it may work again as if nothing happened.

Just some additional info.

BTW, I used GIMP to get this image.

Comment 12 Eddy Pulido

2014-01-21 16:19:20 EST

Created attachment 239206 [details]
Incorrectly rendered Navigator panel after java heap crash

Apparently I uploaded a file that nobody can read, so here's a new version of the screenshot that shows how the Navigator Panel is incorrectly rendered once a java heap error pops up, for whatever reason.

I'm using the latest binaries for Kepler.  I see the status of this bug was set to RESOLVED WORKSFORME.  If you think you've 'fixed' this problem, great!!  ...but I doubt it, it continues to be a pain in the neck.  One eclipse gets into this problem, I can't really do much work with the screwed up Navigator panel because it continues to crash the whole thing.

my 2 cents.

Comment 13 Lars Vogel

2014-01-21 16:44:02 EST

(In reply to Eddy Pulido from comment #12)

> I'm using the latest binaries for Kepler.  I see the status of this bug was
> set to RESOLVED WORKSFORME.  If you think you've 'fixed' this problem,
> great!!  ...but I doubt it, it continues to be a pain in the neck.  

Can you test with the latest Eclipse Luna release? At the time of this writing this is Eclipse 4.4M4 but M5 should be out very soon.

http://download.eclipse.org/eclipse/downloads/

Please reopen this bug, if you still see this problem with Luna.