Bug 211610 [Forms] Adopt new MPE key binding API
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/editor/SharedHeaderFormEditor.java
int index= getActivePage();
			if (index == -1)
				((ManagedForm) getHeaderForm()).setFocus();
			else
				super.setFocus();
		}
	}
	
	private void installActivationListener() {
		if (activationListener == null) {
			activationListener = new Listener() {
				public void handleEvent(Event event) {
					boolean wasHeaderActive = event.widget != getContainer();
					
					
					int activePage = getActivePage();
					if (SharedHeaderFormEditor.this.wasHeaderActive != wasHeaderActive && activePage != -1 && pages.get(activePage) instanceof IEditorPart) {
						IEditorPart activePart = (IEditorPart) pages.get(activePage);
						IKeyBindingService keyBindingService = getSite().getKeyBindingService();
						
						if (wasHeaderActive) {
							
							if (activePart.getSite() instanceof INestable)
								((INestable) activePart.getSite()).deactivate();
							
							if (keyBindingService instanceof INestableKeyBindingService)
								((INestableKeyBindingService) keyBindingService).activateKeyBindingService(null);
							
						} else {