EDIT

package eu.etaxonomy.cdm.vaadin.ui;

import org.springframework.beans.factory.annotation.Autowired;

import org.vaadin.spring.events.EventBus.UIEventBus;

import com.vaadin.annotations.Theme;

import com.vaadin.annotations.Title;

import com.vaadin.annotations.Widgetset;

import com.vaadin.navigator.Navigator;

import com.vaadin.navigator.View;

import com.vaadin.navigator.ViewDisplay;

import com.vaadin.server.Page;

import com.vaadin.server.Responsive;

import com.vaadin.server.VaadinRequest;

import com.vaadin.spring.annotation.SpringUI;

import com.vaadin.spring.navigator.SpringViewProvider;

import com.vaadin.ui.UI;

import eu.etaxonomy.cdm.vaadin.permission.ReleasableResourcesView;

import eu.etaxonomy.cdm.vaadin.view.RedirectToLoginView;

import eu.etaxonomy.cdm.vaadin.view.distributionStatus.DistributionTableViewBean;

import eu.etaxonomy.vaadin.ui.UIInitializedEvent;

import eu.etaxonomy.vaadin.ui.navigation.NavigationManagerBean;

@Theme("macosx")

@Title("Distribution Editor")

@SpringUI(path=DistributionStatusUI.NAME)

@Widgetset("eu.etaxonomy.cdm.vaadin.AppWidgetSet")

@SuppressWarnings("serial")

public class DistributionStatusUI extends UI{

    public static final String NAME = "distribution";

    private ViewDisplay viewDisplay;

    //---- pull into abstract super class ? ---------

    @Autowired

    SpringViewProvider viewProvider;

    @Autowired

    NavigationManagerBean navigator;

    /**

     * Sets the access AcessDeniedView for the UI.

     */

    protected void configureAccessDeniedView() {

        viewProvider.setAccessDeniedViewClass(RedirectToLoginView.class);

    }

    /**

     * Returns the state of the UI.

     * @return State of the UI.

     */

    private String pageFragmentAsState() {

        Page page = Page.getCurrent();

        String fragment = page.getUriFragment();

        String state = null;

        if(fragment != null && fragment.startsWith("!")){

            state = fragment.substring(1, fragment.length());

        }

        return state;

    }

    //---------------------------------------------

    public static final String INITIAL_VIEW =  DistributionTableViewBean.NAME;

//    @Autowired

//    @Qualifier("registrationToolbar")

//    private Toolbar toolbar;

    @Autowired

    UIEventBus uiEventBus;

    /**

     * Creates a new DistributionStatusUI.

     */

    public DistributionStatusUI() {

    }

	@Override

	protected void init(VaadinRequest request) {

	    addDetachListener(e -> {

	        for(String viewName : viewProvider.getViewNamesForCurrentUI()){

	            View view = viewProvider.getView(viewName);

	            if(view != null && view instanceof ReleasableResourcesView) {

	                ((ReleasableResourcesView)view).releaseResourcesOnAccessDenied();

	            }

	        }

	    });

        configureAccessDeniedView();

        Responsive.makeResponsive(this);

        viewDisplay = new Navigator.SingleComponentContainerViewDisplay(this);

        navigator.setViewDisplay(viewDisplay);

        //setContent((Component) viewDisplay);

//        if(ToolbarDisplay.class.isAssignableFrom(viewDisplay.getClass())){

//            ((ToolbarDisplay)viewDisplay).setToolbar(toolbar);

//        }

        uiEventBus.publish(this, new UIInitializedEvent());

        navigator.setDefaultViewName(INITIAL_VIEW);

	}

}