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Created attachment 286271 [details] Model to reproduce With Sirius 6.5.0, I found a scenario where playing with a Constraint (BracketEdge) in a Sequence Diagram can lead to an Exception, and then a blocked Session until the representation is reopened. This can sometimes lead to a "black screen" in the Eclipse IDE or a state where the representation becomes invalid, but I don't have any specific scenarios to reproduce it (maybe trying to select another element in the representation/model explorer, or scrolling through the representation...). I also reproduce it in Sirius 6.4.2 with ODCE 1.4.1. To reproduce the bug: - Import the attached project in "sequence_constraints.zip" and open the representation "Sequence Diagram on Interaction1". - Activate the layer "Duration Constraints" - Using the palette, create a new Constraint on Execution "e11" (located under "m23", on the "newParticipant6:" lifeline) by clicking on the top of "e11" and then the bottom of "e11". The BracketEdge "constraint1" is created. - Resize "constraint1" to center it on "e11" and get a straight line between its two ends. - The expected result can be seen on screenshot-1.png. Two bendpoints are very close to each other at the bottom of "e11". When trying to move the lower bendpoint, an Exception is raised. (At this point, trying to move other bendpoints, or select another element may raise new errors). eclipse.buildId=unknown java.version=1.8.0_271 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=fr_FR Framework arguments: -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini Command-line arguments: -os win32 -ws win32 -arch x86_64 -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -data file:/C:/dev/homolo/OD-11.5/IT2/ObeoDesigner-Community/workspace/ -pluginCustomization pluginCustomization.ini org.eclipse.ui.workbench Error Thu Apr 29 17:32:15 CEST 2021 Unhandled event loop exception java.lang.ClassCastException: org.eclipse.draw2d.RelativeBendpoint cannot be cast to org.eclipse.sirius.diagram.ui.business.internal.bracket.BracketRelativeBendpoint at org.eclipse.sirius.diagram.ui.business.internal.bracket.BracketConnectionQuery.getPointListFromConstraintAndMove(BracketConnectionQuery.java:545) at org.eclipse.sirius.diagram.ui.business.internal.bracket.BracketConnectionQuery.getPointListFromConstraint(BracketConnectionQuery.java:520) at org.eclipse.sirius.diagram.ui.tools.internal.routers.BracketConnectionRouter.route(BracketConnectionRouter.java:89) at org.eclipse.draw2d.PolylineConnection$RoutingNotifier.route(PolylineConnection.java:371) at org.eclipse.draw2d.PolylineConnection.layout(PolylineConnection.java:176) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramEdgeEditPart$ViewEdgeFigure.layout(AbstractDiagramEdgeEditPart.java:715) at org.eclipse.draw2d.Figure.validate(Figure.java:1899) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.FreeformViewport$FreeformViewportLayout.calculatePreferredSize(FreeformViewport.java:25) at org.eclipse.draw2d.AbstractLayout.getPreferredSize(AbstractLayout.java:110) at org.eclipse.draw2d.AbstractHintLayout.getPreferredSize(AbstractHintLayout.java:90) at org.eclipse.draw2d.Figure.getPreferredSize(Figure.java:810) at org.eclipse.draw2d.ScrollPaneSolver.solve(ScrollPaneSolver.java:82) at org.eclipse.draw2d.FigureCanvas.layoutViewport(FigureCanvas.java:325) at org.eclipse.draw2d.FigureCanvas.access$4(FigureCanvas.java:323) at org.eclipse.draw2d.FigureCanvas$3.notifyValidating(FigureCanvas.java:292) at org.eclipse.draw2d.UpdateManager.fireValidating(UpdateManager.java:143) at org.eclipse.sirius.diagram.ui.tools.internal.part.SiriusDiagramGraphicalViewer$ToggleUpdateManager.performValidation(SiriusDiagramGraphicalViewer.java:201) at org.eclipse.draw2d.DeferredUpdateManager.paint(DeferredUpdateManager.java:167) at org.eclipse.draw2d.LightweightSystem.paint(LightweightSystem.java:203) at org.eclipse.draw2d.LightweightSystem$2.handleEvent(LightweightSystem.java:110) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4213) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1037) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1046) at org.eclipse.swt.widgets.Composite.WM_PAINT(Composite.java:1525) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4797) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4931) at org.eclipse.swt.internal.win32.OS.DefWindowProc(Native Method) at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1454) at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5836) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4923) at org.eclipse.swt.internal.win32.OS.DefWindowProc(Native Method) at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1454) at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5836) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4931) at org.eclipse.swt.internal.win32.OS.DispatchMessage(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3628) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1158) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1047) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) 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:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1447) eclipse.buildId=unknown java.version=1.8.0_271 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=fr_FR Framework arguments: -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini Command-line arguments: -os win32 -ws win32 -arch x86_64 -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -pluginCustomization pluginCustomization.ini -data file:/C:/dev/homolo/OD-11.5/IT2/ObeoDesigner-Community/workspace/ -pluginCustomization pluginCustomization.ini org.eclipse.ui.workbench Error Thu Apr 29 17:32:02 CEST 2021 Unhandled event loop exception java.lang.IllegalStateException at com.google.common.base.Preconditions.checkState(Preconditions.java:492) at org.eclipse.sirius.diagram.ui.internal.edit.parts.locator.EdgeLabelQuery.<init>(EdgeLabelQuery.java:191) at org.eclipse.sirius.diagram.ui.internal.edit.parts.locator.EdgeLabelLocator.computeOffSet(EdgeLabelLocator.java:125) at org.eclipse.sirius.diagram.ui.internal.edit.parts.locator.EdgeLabelLocator.relocate(EdgeLabelLocator.java:113) at org.eclipse.gmf.runtime.draw2d.ui.internal.figures.DelegatingLayout.layout(DelegatingLayout.java:44) at org.eclipse.draw2d.Figure.layout(Figure.java:1096) at org.eclipse.draw2d.PolylineConnection.layout(PolylineConnection.java:179) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramEdgeEditPart$ViewEdgeFigure.layout(AbstractDiagramEdgeEditPart.java:715) at org.eclipse.draw2d.Figure.validate(Figure.java:1899) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.Figure.validate(Figure.java:1901) at org.eclipse.draw2d.FreeformViewport$FreeformViewportLayout.calculatePreferredSize(FreeformViewport.java:25) at org.eclipse.draw2d.AbstractLayout.getPreferredSize(AbstractLayout.java:110) at org.eclipse.draw2d.AbstractHintLayout.getPreferredSize(AbstractHintLayout.java:90) at org.eclipse.draw2d.Figure.getPreferredSize(Figure.java:810) at org.eclipse.draw2d.ScrollPaneSolver.solve(ScrollPaneSolver.java:82) at org.eclipse.draw2d.FigureCanvas.layoutViewport(FigureCanvas.java:325) at org.eclipse.draw2d.FigureCanvas.access$4(FigureCanvas.java:323) at org.eclipse.draw2d.FigureCanvas$3.notifyValidating(FigureCanvas.java:292) at org.eclipse.draw2d.UpdateManager.fireValidating(UpdateManager.java:143) at org.eclipse.sirius.diagram.ui.tools.internal.part.SiriusDiagramGraphicalViewer$ToggleUpdateManager.performValidation(SiriusDiagramGraphicalViewer.java:201) at org.eclipse.draw2d.DeferredUpdateManager.performUpdate(DeferredUpdateManager.java:193) at org.eclipse.sirius.diagram.ui.tools.internal.part.SiriusDiagramGraphicalViewer$ToggleUpdateManager.performUpdate(SiriusDiagramGraphicalViewer.java:188) at org.eclipse.draw2d.DeferredUpdateManager$UpdateRequest.run(DeferredUpdateManager.java:44) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4005) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3633) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1158) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1047) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:658) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:557) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) 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:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1447)
Created attachment 286272 [details] screenshot-1.png
Also reproduced with Sirius 6.3.5, OD 11.3.2.
