将活动侦听器添加到AbstractDecoratedTextEditor

Question

I have a editor MyEditor that extends AbstractDecoratedTextEditor . In eclipse, I can have a lot of files of MyEditor opened. Each file is a instance of MyEditor . When I click in the tab to change the file, I need to execute same actions of the instance (file) that will open. That is, I need to add a listener in MyEditor to know when the instance (file) became active.

Answer 1

You can use an org.eclipse.ui.IPartListener to listen for changes to parts.

IPartService partService = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getPartService();

partService.addPartListener(listener);

The

public void partActivated(IWorkbenchPart part)

method of the listener will be called when a part is activated so you check here for your editor.

Your editor is an instance of IWorkbenchPart so you in the `partActivated you can just use

if (part instanceof MyEditor)
 {
   MyEditor editor = (MyEditor)part;

   ... check which file this editor is editing 
   ... and do action if it is the required file

 }