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eclipse-plugine4

Using StatusHandler in E4

In E3, each class could handle a status like this:

IStatus status = new Status(IStatus.WARNING, TestPlugin.PLUGIN_ID, "Hello World");
StatusManager.getManager().handle(status, StatusManager.SHOW);

Now it seems a bit more tricky. This documentation guesses this should work for classes that support injection:

@Inject Provider<StatusHandler> statusHandler;
@Inject Provider<StatusReportingService> statusReportingService;

public void foo() {
  try {
    // some operation
  } catch (SomeException ex) {
     statusHandler.get().handle(ex, IStatus.ERROR, "Error Message", statusReportingService.get());
  }
}

However, it doesn't. Since there were no imports in the example (and why would there? There are only 4 Provider classes in plain java), I guessed they meant javax.inject.Provider and tried to inject org.eclipse.jface.util.StatusHandler:

org.eclipse.e4.core.di.InjectionException: Unable to instantiate public org.eclipse.jface.util.StatusHandler()
    at org.eclipse.e4.core.internal.di.ConstructorRequestor.execute(ConstructorRequestor.java:44)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:373)
    at org.eclipse.e4.core.internal.di.InjectorImpl.makeFromProvider(InjectorImpl.java:325)
    at org.eclipse.e4.core.internal.di.ProviderImpl.get(ProviderImpl.java:34)
    at org.acme.project.Main.createStatusHandler(StatusUtil.java:26)

So maybe that's not the right StatusHandler? How do I use the StatusHandler in E4?

Solution

  • It looks like this was never implemented. Instead the org.eclipse.e4.core.services.statusreporter.StatusReporter class can be injected and used to log or show errors.

    @Inject
StatusReporter statusReporter;

statusReporter.report(status, StatusReporter.SHOW | StatusReporter.LOG);