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If the lifeline has a stereotype, we can't create any element on it (works well if the lifeline has no stereotype). To reproduce the bug: - Create a new UML Papyrus project - Create a new sequence diagram - Add a lifeline and add a stereotype to this lifeline (any stereotype) - Try to add a state invariant, a message or an action execution specification on the lifeline The log error is given here: Error stack trace: java.lang.IllegalArgumentException: Anchor anchor is not a valid BaseSlidableAnchor at org.eclipse.papyrus.infra.gmfdiag.common.helper.IdentityAnchorHelper.getYPercentage(IdentityAnchorHelper.java:95) at org.eclipse.papyrus.uml.diagram.sequence.referencialgrilling.DisplayEvent.getMessageEvent(DisplayEvent.java:339) at org.eclipse.papyrus.uml.diagram.sequence.referencialgrilling.DisplayEvent.getMessageEvent(DisplayEvent.java:95) at org.eclipse.papyrus.uml.diagram.sequence.referencialgrilling.LifelineCreationEditPolicy.getCreateElementAndViewCommand(LifelineCreationEditPolicy.java:85) at org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy.getCommand(CreationEditPolicy.java:87) at org.eclipse.papyrus.infra.gmfdiag.dnd.policy.CustomizableDropEditPolicy.getCommand(CustomizableDropEditPolicy.java:121) at org.eclipse.gef.editparts.AbstractEditPart.getCommand(AbstractEditPart.java:502) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$1(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$1.run(GraphicalEditPart.java:482) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.getCommand(GraphicalEditPart.java:477) at org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy.getUnspecifiedTypeCreateCommand(CreationEditPolicy.java:395) at org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy.getCommand(CreationEditPolicy.java:85) at org.eclipse.papyrus.infra.gmfdiag.dnd.policy.CustomizableDropEditPolicy.getCommand(CustomizableDropEditPolicy.java:121) at org.eclipse.gef.editparts.AbstractEditPart.getCommand(AbstractEditPart.java:502) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$1(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$1.run(GraphicalEditPart.java:482) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.getCommand(GraphicalEditPart.java:477) at org.eclipse.gef.tools.TargetingTool.getCommand(TargetingTool.java:123) at org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool.getCommand(CreationTool.java:277) at org.eclipse.gef.tools.CreationTool.handleMove(CreationTool.java:253) at org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool.handleMove(CreationTool.java:258) at org.eclipse.gef.tools.AbstractTool.mouseMove(AbstractTool.java:1182) at org.eclipse.gef.EditDomain.mouseMove(EditDomain.java:287) at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMouseMoved(DomainEventDispatcher.java:365) at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseMove(LightweightSystem.java:543) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:216) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4145) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1055) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3958) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3561) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:628) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:563) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:151) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:155) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:199) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:391) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:246) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595) at org.eclipse.equinox.launcher.Main.run(Main.java:1501) at org.eclipse.equinox.launcher.Main.main(Main.java:1474)
I confirm this bug
With the 2018-09 and 2018-12 updates to the sequence diagram, the code should never assume that a Papyrus Anchor will necessarily be a BaseSlidableAnchor (e.g. we used a lot of fixed/automatic anchors for Duration Links). It shouldn't assume that all edges are messages, either :) Most of these assumptions have been removed already, but there might still be a few ones (Like in this case)
New Gerrit change created: https://git.eclipse.org/r/139347
Gerrit change https://git.eclipse.org/r/139347 was merged to [master]. Commit: http://git.eclipse.org/c/papyrus/org.eclipse.papyrus.git/commit/?id=a7b3491363cf80239db4eca787c4182330ba02a5
This works fine in 2019-03. I close this bug.
