EDIT

package eu.etaxonomy.cdm.remote.vaadin.components;

import java.io.Serializable;

import javax.annotation.PostConstruct;

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

import org.springframework.context.annotation.Scope;

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

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

import org.springframework.stereotype.Component;

import com.vaadin.server.ThemeResource;

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 eu.etaxonomy.cdm.remote.vaadin.service.VaadinAuthenticationService;

/**

 * 

 * This component creates a simple toolbar. It also makes use of the AuthenticationController.

 * 

 * @author a.oppermann

 *

 */

@Component

@Scope("request")

public class HorizontalToolbar extends HorizontalLayout implements Serializable{

	/**

	 * automatically generated ID

	 */

	private static final long serialVersionUID = 5344340511582993289L;

	@Autowired

	private transient VaadinAuthenticationService authenticationController;

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

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

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

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

//	private ExcelExporter exporter = new ExcelExporter();

	@PostConstruct

    public void PostConstruct() {

		if(authenticationController.isAuthenticated()){

			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"));

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

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

			SecurityContext context = SecurityContextHolder.getContext();

			Label loginName = new Label(authenticationController.getUserName());

			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(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;

				public void buttonClick(ClickEvent event) {

					authenticationController.logout();

				}

			});

		}

    }

	public Button getEditButton() {

		return editButton;

	}

	public Button getSaveButton() {

		return saveButton;

	}

	public Button getDetailButton() {

		return detailButton;

	}

}