Outline view loses its context menu

[lwrage]

Summary

Every once in a while the context menu in the outline view disappears. It appears again after a restart.

Steps to Reproduce

1. Close all editors
2. Open an AADL file, say P.aadl. -> The context menu in the outline view works.
3. Open another AADL file, say Q.aadl, leaving P.aadl open. -> The context menu in the outline view works.
4. Switch to the editor tab for P.aadl. -> The context menu does not appear any more.

Workaround

Close and reopen the text editor. Only the outline view for editor opened last will work.

Environment

• OSATE Version: 2.6.0
• Operating System: all

[jjhugues]

I have a workspace that also exhibits this weird behavior
Closing the outline and reopening it restores it

Interesting enough, this bug (in my case) is on a per-AADL package basis. In a given workspace, some packages have this bug, others do not.

Also, I do have occurrences of the menu being partially complete, the missing parts being resolute menus

right click leads to the following stack trace

java.lang.NullPointerException
at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerShowProcessor.showPopup(MenuManagerShowProcessor.java:243)
at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerShowProcessor.menuAboutToShow(MenuManagerShowProcessor.java:89)
at org.eclipse.jface.internal.MenuManagerEventHelper.showEventPreHelper(MenuManagerEventHelper.java:84)
at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:470)
at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:466)
at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:498)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:259)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4406)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1516)
at org.eclipse.swt.widgets.Menu.menuWillOpen(Menu.java:808)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:6180)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
at org.eclipse.swt.internal.cocoa.NSMenu.popUpContextMenu(NSMenu.java:80)
at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:270)
at org.eclipse.swt.widgets.Display.runPopups(Display.java:4270)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3803)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:633)
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:150)
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:400)
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:660)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
at org.eclipse.equinox.launcher.Main.run(Main.java:1468)

[lwrage]

This is not an OSATE issue as it happens for Xtend files, too.

[joeseibel]

See eclipse/xtext-eclipse#1252

[lwrage]

Looks like it will be fixed as soon as we upgrade to the next eclipse version.