Time for action – responding to selection changes

When the selection is changed in the E4 selection service, parts can be notified that a new selection is available through injection. Although an @Inject field could be used, there would be no trigger that could be used to update the view. Instead, a method with an injected parameter will be used to trigger the update.

1. Add the required packages to the bundle's package imports, by right-clicking on the com.packtpub.e4.clock.ui project and navigating to Plug-in Tools | Open Manifest to open the bundle's manifest. On the Dependencies tab, click on Add under the Imported Packages section and enter org.eclipse.e4.ui.services.

2. In the TimeZoneTableView class, create a method called setTimeZone. The method name isn't specifically important, but the method needs to be annotated with @Inject and @Optional, and the argument needs to be annotated with @Named(IServiceConstants.ACTIVE_SELECTION). It should look like:

   @Inject
   @Optional
   public void setTimeZone...