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Steps to reproduce: 1. Install the new Papyrus EEF Property View and activate them 2. Create a Papyrus GMF Class Diagram (not a Papyrus-Sirius diagram) 3. Create a Class on the Class Diagram and select it 4. In the EEF appareance tab, try to change the color on the Class. It doesn't work. It is probably due to a missing EAnnotation in the notation. This EAnnotation should be added by Papyrus XWT View and not by Papyrus EEF.
I can't seem to find the EAnnotation I was thinking of, but I get this exception with the Sirius property View, trying to change the background color of a Class on the Papyrus GMF Class Diagram. java.lang.NullPointerException: Cannot invoke "org.eclipse.sirius.business.api.session.Session.getSelectedViewpoints(boolean)" because "session" is null at org.eclipse.sirius.diagram.ui.tools.api.color.ColorManager.collectVsmAndDefaultColors(ColorManager.java:120) at org.eclipse.sirius.diagram.ui.tools.internal.properties.DiagramShapeColorAndFontPropertySection.changeColor(DiagramShapeColorAndFontPropertySection.java:138) at org.eclipse.gmf.runtime.diagram.ui.properties.sections.appearance.ColorsAndFontsPropertySection.changeColor(ColorsAndFontsPropertySection.java:372) at org.eclipse.gmf.runtime.diagram.ui.properties.sections.appearance.ColorsAndFontsPropertySection.changeLineColor(ColorsAndFontsPropertySection.java:328) at org.eclipse.gmf.runtime.diagram.ui.properties.sections.appearance.ColorsAndFontsPropertySection$10.widgetSelected(ColorsAndFontsPropertySection.java:294) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4256) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4054) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3642) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:643) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:550) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:171) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:568) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596) at org.eclipse.equinox.launcher.Main.run(Main.java:1467) at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
