EDIT

package eu.etaxonomy.cdm.vaadin.component;

import java.io.Serializable;

import org.springframework.security.core.Authentication;

import org.springframework.security.core.context.SecurityContext;

import org.springframework.security.core.context.SecurityContextHolder;

import com.vaadin.server.Page;

import com.vaadin.server.ThemeResource;

import com.vaadin.server.VaadinServlet;

import com.vaadin.server.VaadinSession;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.Button.ClickEvent;

import com.vaadin.ui.Button.ClickListener;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.Image;

import com.vaadin.ui.Label;

import com.vaadin.ui.UI;

import eu.etaxonomy.cdm.vaadin.security.UserHelper;

import eu.etaxonomy.cdm.vaadin.util.CdmVaadinAuthentication;

public class HorizontalToolbar extends HorizontalLayout implements Serializable{

	/**

	 * automatically generated ID

	 */

	private static final long serialVersionUID = 5344340511582993289L;

	private final Button editButton = new Button("Edit");

	private final Button saveButton = new Button("Save");

	private final Button detailButton = new Button("Detail");

	private final Button distributionSettingsButton =  new Button("Distribution Settings");

	private final Button settingsButton =  new Button("Settings");

	private final Button logoutButton= new Button("Logout");

//	private final Authentication authentication;

//	private ExcelExporter exporter = new ExcelExporter();

	public HorizontalToolbar() {

//		authentication = (Authentication) VaadinSession.getCurrent().getAttribute("authentication");

//		CdmVaadinAuthentication authentication = (CdmVaadinAuthentication) VaadinSession.getCurrent().getAttribute(CdmVaadinAuthentication.KEY);

//		this.authentication = authentication.getAuthentication(Page.getCurrent().getLocation(), VaadinServlet.getCurrent().getServletContext().getContextPath());

		init();

	}

    public void init() {

    	String userName = UserHelper.fromSession().userName();

		if(userName != null){

			setMargin(true);

			setSpacing(true);

			setStyleName("toolbar");

			setWidth("100%");

			setHeight("75px");

//			addComponent(editButton);

//			addComponent(saveButton);

			addComponent(detailButton);

//			addComponent(exporter);

//			exporter.setCaption("Export");

//			exporter.setIcon(new ThemeResource("icons/32/document-xsl.png"));

			saveButton.setIcon(new ThemeResource("icons/32/document-save.png"));

			editButton.setIcon(new ThemeResource("icons/32/document-edit.png"));

			detailButton.setIcon(new ThemeResource("icons/32/document-txt.png"));

			settingsButton.setIcon(new ThemeResource("icons/32/settings_1.png"));

			distributionSettingsButton.setIcon(new ThemeResource("icons/32/settings_1.png"));

			logoutButton.setIcon(new ThemeResource("icons/32/cancel.png"));

			//		SecurityContext context = (SecurityContext)VaadinService.getCurrentRequest().getWrappedSession().getAttribute("context");

			SecurityContext context = SecurityContextHolder.getContext();

			Label loginName = new Label(userName);

			loginName.setIcon(new ThemeResource("icons/32/user.png"));

			HorizontalLayout rightLayout = new HorizontalLayout();

			Image image = new Image(null, new ThemeResource("icons/32/vseparator1.png"));

			rightLayout.addComponent(settingsButton);

			rightLayout.addComponent(distributionSettingsButton);

			rightLayout.addComponent(logoutButton);

			rightLayout.addComponent(image);

			rightLayout.addComponent(loginName);

			addComponent(rightLayout);

			setComponentAlignment(rightLayout, Alignment.MIDDLE_RIGHT);

			setExpandRatio(rightLayout, 1);

			logoutButton.addClickListener(new ClickListener() {

				/**

				 *  automatically generated ID

				 */

				private static final long serialVersionUID = 8380401487511285303L;

				@Override

                public void buttonClick(ClickEvent event) {

					SecurityContextHolder.getContext().setAuthentication(null);

					VaadinSession.getCurrent().close();

				}

			});

		}

    }

    public Button getSettingsButton(){

        return settingsButton;

    }

    public Button getDistributionSettingsButton() {

		return distributionSettingsButton;

	}

	public Button getEditButton() {

		return editButton;

	}

	public Button getSaveButton() {

		return saveButton;

	}

	public Button getDetailButton() {

		return detailButton;

	}

}