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* empty uml papyrus diagram file open in editor * activate task * NPE happens Doesn't happen if you activate task and then open the editor !ENTRY org.eclipse.mylyn.context.core 2 0 2011-08-12 02:03:47.476 !MESSAGE Listener failed: class org.eclipse.mylyn.modeling.gmf.MylynDecoratorProvider$1 !STACK 0 java.lang.NullPointerException at org.eclipse.mylyn.modeling.gmf.MylynDecoratorProvider.getRootEditPart(MylynDecoratorProvider.java:170) at org.eclipse.mylyn.modeling.gmf.MylynDecoratorProvider.refreshEditors(MylynDecoratorProvider.java:152) at org.eclipse.mylyn.modeling.gmf.MylynDecoratorProvider.contextChanged(MylynDecoratorProvider.java:217) at org.eclipse.mylyn.modeling.gmf.MylynDecoratorProvider$1.contextChanged(MylynDecoratorProvider.java:66) at org.eclipse.mylyn.internal.context.core.InteractionContextManager$6.run(InteractionContextManager.java:688) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.mylyn.internal.context.core.InteractionContextManager.internalActivateContext(InteractionContextManager.java:679) at org.eclipse.mylyn.internal.context.core.InteractionContextManager.activateContext(InteractionContextManager.java:180) at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin$1.taskActivated(TasksUiPlugin.java:262) at org.eclipse.mylyn.internal.tasks.core.TaskActivityManager.activateTask(TaskActivityManager.java:425) at org.eclipse.mylyn.internal.tasks.ui.commands.ActivateTaskHandler.execute(ActivateTaskHandler.java:30) at org.eclipse.mylyn.internal.tasks.ui.commands.AbstractTaskHandler.process(AbstractTaskHandler.java:80) at org.eclipse.mylyn.internal.tasks.ui.commands.AbstractTaskHandler.process(AbstractTaskHandler.java:64) at org.eclipse.mylyn.internal.tasks.ui.commands.AbstractTaskHandler.execute(AbstractTaskHandler.java:46) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommandInContext(HandlerService.java:270) at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal.executeCommand(TasksUiInternal.java:1228) at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal.activateTaskThroughCommand(TasksUiInternal.java:1274) at org.eclipse.mylyn.internal.tasks.ui.views.TaskListCellModifier.toggleTaskActivation(TaskListCellModifier.java:134) at org.eclipse.mylyn.internal.tasks.ui.views.TaskListView$11.mouseUp(TaskListView.java:888) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:219) 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:3588) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) 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:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) 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)
Just a note that I'm only working on Ecore Diagram right now as it doesn't make sense to maintain both diagram types at once. I can't replciate this with Ecore diagrams. We'll synch up any changes later.
OK, I was able to reproduce. Happens because (I don't quite get why) Papyrus doesn't have a viewer in default model.
