Description Andreas Sewe 2017-02-01 07:13:01 EST

Created attachment 266561 [details]
Minimal example project

Hi,

I have the following use case: When installed, my plug-in should automatically open its view the next time the Eclipse IDE is started. Moreover, if the user starts in the Java perspective, the view should open in the "optimal" location (as determined by a perspectiveExtension).

My implementation looks like this:

1) In IStartup#earlyStartup I schedule a WorkbenchJob.

2) In WorkbenchJob#runInUIThread I do worbenchPage.showView("org.example.SampleView");

    public void earlyStartup() {

        Job job = new WorkbenchJob("") {

            @Override
            public IStatus runInUIThread(IProgressMonitor monitor) {
                try {
                    PlatformUI.getWorkbench().getActivePage().showView("org.example.SampleView");
                } catch (Exception e) {
                }
                return Status.OK_STATUS;
            }
        };
        job.schedule();
    }


Unfortunately, this will open my view right next the "Welcome" view, even though technically the Java Perspective is already open, just minimized.

Strangely enough, the above implementation strategy works if I try to show *another* view which was already installed previously (e.g., the Project Explorer):
    PlatformUI.getWorkbench().getActivePage().showView("org.eclipse.ui.navigator.ProjectExplorer");

This opens the Project Explorer where you would expect it, i.e., next to the Package Explorer rather than next to the Welcome view. What's even more strange is that opening Package Explorer *and then* the Sample View opens both views on the perspective proper, i.e., not next to the Welcome view. (Still, the Sample View is perspectiveExtension/view@ration attribute is not respected.)

FWIW, all this has been tested with both Neon.2 and Oxygen M5.