Question

我是E4应用程序开发的新手。我成功地在RCP 3.7.x中添加了系统托盘图标。在e4应用程序中添加系统托盘图标。我正在使用e4应用程序生命周期以这种方式添加系统托盘图标：

public class LifeCycleManager {
    @PostContextCreate
    void postContextCreate(IApplicationContext appContext, Display display) {
    SystemNotifier icon= new SystemNotifier(shell);
    SystemNotifier.trayItem = icon.initTaskItem(shell);
    if (SystemNotifier.trayItem != null) {      
        icon.hookPopupMenu();
    }
  }

}

如何在e4应用程序中获取Active Workbench Shell的参考。哪个注释使用e4应用程序生命周期来添加系统托盘

Answer 1

@PostContextCreate运行时，应用程序shell不可用。您需要等待应用程序启动完成事件，例如：

@PostContextCreate
void postContextCreate(IEclipseContext context, IEventBroker eventBroker)
{
  eventBroker.subscribe(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE, new AppStartupCompleteEventHandler(eventBroker, context));
}


private static final class AppStartupCompleteEventHandler implements EventHandler
{
  private final IEventBroker _eventBroker;
  private final IEclipseContext _context;


  AppStartupCompleteEventHandler(IEventBroker eventBroker, IEclipseContext context)
  {
    _eventBroker = eventBroker;
    _context = context;
  }


  @Override
  public void handleEvent(final Event event)
  {
    _eventBroker.unsubscribe(this);

    Shell shell = (Shell)_context.get(IServiceConstants.ACTIVE_SHELL);

    ... your code ...
  }

}

在E4应用程序中添加系统托盘和Active Workbench Shell参考

1 个答案: