eclipse - 如何在编辑器页面获得 Eclipse 焦点时运行类？

Question

是否有一种方法可以在每次编辑器页面接收焦点时运行一个类，例如类源在 Eclipse 外部更改时的提示消息？插件编辑器或扩展可以完成这项工作吗？

Answer 1

常见问题解答“How do I find out what view or editor is selected?”可以帮助您在编辑器处于事件状态时调用您的类(此时您可以测试它是否也具有焦点)，作者:using a IPartService :

Two types of listeners can be added to the part service:

• IPartListener
• 和poorly named IPartListener2 。

You should always use this second one as it can handle part-change events on parts that have not yet been created because they are hidden in a stack behind another part.
This listener will also tell you when a part is made visible or hidden or when an editor's input is changed:

IWorkbenchPage page = ...;
   //the active part
   IWorkbenchPart active = page.getActivePart();
   //adding a listener
   IPartListener2 pl = new IPartListener2() {
      public void partActivated(IWorkbenchPartReference ref)
         System.out.println("Active: "+ref.getTitle());
      }
      ... other listener methods ...
   };
   page.addPartListener(pl);

注:IWorkbenchPage直接实现IPartService。
您还可以通过 using IWorkbenchWindow.getPartService() 获取激活服务.