How do I get notified whenever a new editor is opened in Eclipse?

I have a view which would like to be notified about all the currently opened editors. Where can I add a listener to achieve this?

I was expecting WorkbenchPage or EditorManager to have some appropriate listener registry, but I couldn't find it.

From stackoverflow

• I think you're on the right track. You need to listen to the IWorkbenchPage IPartService events:

  page.addPartListener(new IPartListener() {
      partOpened(IWorkbenchPart part) {
          ...
      }
  
      ...
  });
  

  Tirno : doesn't seem to do anything for me

  Tirno : ah... I was not reading your comment properly. I had added it to the page, not to the page's partService.

  Mike Houston : You probably didn't misread it - I thought you could just listen to the page directly. Apparently not.

• Does your view uses a org.eclipse.ui.IPartListener2 ?

  That is what is using this EditorListener, whose job is to react, for a given view, to Editor events (including open and close)

  public class EditorListener implements ISelectionListener, IFileBufferListener,
  IPartListener2 {
      protected BytecodeOutlineView view;
  
      EditorListener(BytecodeOutlineView view){
          this.view = view;
      }
  
  [...] 
  
      /**
       * @see org.eclipse.ui.IPartListener2#partOpened(org.eclipse.ui.IWorkbenchPartReference)
       */
      public void partOpened(IWorkbenchPartReference partRef) {
          view.handlePartVisible(partRef.getPart(false));
      }
  

  ---

  Now if your ViewPart directly implements an IPartListener2, it can register itself to the various Editors, like this BytecodeReferenceView

  public class BytecodeReferenceView extends ViewPart implements IPartListener2, ISelectionListener {
  
      [...]
  
      public void createPartControl(Composite parent) {
          browser = new Browser(parent, SWT.BORDER);
          browser.setText(BytecodeOutlinePlugin.getResourceString(NLS_PREFIX
              + "empty.selection.text"));
          final IWorkbenchWindow workbenchWindow = getSite().getWorkbenchWindow();
          workbenchWindow.getPartService().addPartListener(this);
      [...]