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I launched the photo demo after implementing my own renderer for an MPartStack and got a CCE on startup. java.lang.ClassCastException: org.eclipse.e4.ui.workbench.renderers.swt.TabFolderPartStackRenderer incompatible with org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java:60) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4668) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:172) 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: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:282) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:237) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:502) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:477) at org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer.activate(AbstractPartRenderer.java:105) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer$3.handleEvent(ContributedPartRenderer.java:210) 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.Widget.sendEvent(Widget.java:1077) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1058) at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:1444) at org.eclipse.swt.widgets.Control.sendFocusEvent(Control.java:2823) at org.eclipse.swt.widgets.Widget.wmSetFocus(Widget.java:2403) at org.eclipse.swt.widgets.Control.WM_SETFOCUS(Control.java:5135) at org.eclipse.swt.widgets.Tree.WM_SETFOCUS(Tree.java:6986) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4581) at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5886) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4957) at org.eclipse.swt.internal.win32.OS.SetFocus(Native Method) at org.eclipse.swt.widgets.Control.forceFocus(Control.java:1089) at org.eclipse.swt.widgets.Control.setFocus(Control.java:3290) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1040) at org.eclipse.e4.demo.e4photo.Library.setFocus(Library.java:203) 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:56) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:226) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:203) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:101) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer$1.setFocus(ContributedPartRenderer.java:77) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:1038) at org.eclipse.swt.widgets.Shell.open(Shell.java:1245) at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.postProcess(WBWRenderer.java:591) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:536) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:597) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:809) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:768) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:87) at org.eclipse.e4.ui.internal.workbench.swt.E4Application.start(E4Application.java:135) 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:79) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:618) 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)
Created attachment 191339 [details] Swap the assignment until after the renderer check is done
Looks like Eric has fixed this.
