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Bug 354569

Summary:	[modeling] NPE when activiting task and Papyrus editor is already open
Product:	z_Archived	Reporter:	Benjamin Muskalla <b.muskalla>
Component:	Mylyn	Assignee:	Miles Parker <milesparker>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3	CC:	milesparker
Version:	unspecified
Target Milestone:	0.9
Hardware:	PC
OS:	Linux
Whiteboard:
Bug Depends on:
Bug Blocks:	354787

Description Benjamin Muskalla

2011-08-11 20:05:12 EDT

* 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)

Comment 1 Miles Parker

2011-08-15 23:36:53 EDT

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.

Comment 2 Miles Parker

2011-08-17 23:10:04 EDT

OK, I was able to reproduce. Happens because (I don't quite get why) Papyrus doesn't have a viewer in default model.