在e4应用程序模型中更新Handler交换机上的UI贡献

Question

I have defined a command global to my e4 application, namely the add command. So, as you can see in the command is to used throughout the application (1) and to the repsective handler to be activated on context switch to the resp. parts in (2) and (3).

Now what I am missing, is the possibility to update all UI contributions like (4) allocated to command (1) with the information such as in (2) add contact, and when switching to (3) add account.

What is the general recommended way to update all UI contributions of a command considering the actual context of the command (which handler is active etc.). In Eclipse 3.x we had something like the IElementUpdater which was taking care of doing the respective update.

Thanks for your hints! - Parallely discussed in Eclipse Forum

I worked on finding a solution, and have outlined the current state in my blog .

Answer 1

您可以在类和下面的语句中注入IEventBroker，此语句将检查应用程序中的所有UI启用

    eventBroker.send(UIEvents.REQUEST_ENABLEMENT_UPDATE_TOPIC, UIEvents.ALL_ELEMENT_ID);