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I had code that looked like: MMenu menu = model.getMainMenu(); menu.setToBeRendered(false); engine.removeGui(menu); model.setMainMenu(null); It generated an exception. 2010-07-07 15:03:17.819 Log ErrorException while dispatching event org.osgi.service.event.Event [topic=org/eclipse/e4/ui/model/ui/UIElement/widget/SET] to handler org.eclipse.e4.ui.services.internal.events.UIEventHandler@37453745 org.eclipse.swt.SWTException: Widget is disposed at org.eclipse.swt.SWT.error(SWT.java:4083) at org.eclipse.swt.SWT.error(SWT.java:3998) at org.eclipse.swt.SWT.error(SWT.java:3969) at org.eclipse.swt.widgets.Widget.error(Widget.java:466) at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:402) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:212) at org.eclipse.e4.ui.workbench.renderers.swt.TrimmedPartLayout.layout(TrimmedPartLayout.java:121) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1546) at org.eclipse.swt.widgets.Shell.resizeBounds(Shell.java:1581) at org.eclipse.swt.widgets.Shell.setMenuBar(Shell.java:1813) at org.eclipse.swt.widgets.Menu.releaseParent(Menu.java:762) at org.eclipse.swt.widgets.Widget.release(Widget.java:1088) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:462) at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.disposeWidget(SWTPartRenderer.java:127) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:495) at org.eclipse.ui.internal.WorkbenchWindow$1.handleEvent(WorkbenchWindow.java:270) 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:227) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149) 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:67) 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.UIElementImpl.setWidget(UIElementImpl.java:225) at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.unbindWidget(SWTPartRenderer.java:107) at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.disposeWidget(SWTPartRenderer.java:126) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:495) at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1441) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:1142) at org.eclipse.ui.internal.WorkbenchWindow.access$9(WorkbenchWindow.java:1121) at org.eclipse.ui.internal.WorkbenchWindow$6.run(WorkbenchWindow.java:1168) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:1166) at org.eclipse.ui.internal.Workbench$13.run(Workbench.java:1017) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:1011) at org.eclipse.ui.internal.Workbench.access$11(Workbench.java:945) at org.eclipse.ui.internal.Workbench$14.run(Workbench.java:1087) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1085) at org.eclipse.ui.internal.Workbench.close(Workbench.java:1058) at org.eclipse.ui.internal.handlers.QuitHandler.execute(QuitHandler.java:36) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:56) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:600) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:47) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:199) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:176) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:101) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:135) at org.eclipse.e4.ui.workbench.renderers.swt.HandledMenuItemRenderer$1.widgetSelected(HandledMenuItemRenderer.java:150) 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:1258) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3552) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:669) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:594) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:103) at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:535) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:519) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) 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:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:600) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383)
As a workaround I null out the field on dispose. PW
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.
This bug was marked as stalebug a while ago. Marking as worksforme. If this report is still relevant for the current release, please reopen and remove the stalebug whiteboard tag.
This bug has been marked as stalebug a while ago without any further interaction. If this report is still relevant for the current release, please reopen and remove the stalebug whiteboard flag.
