EDIT

/**

* Copyright (C) 2017 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.toolbar;

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

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

import org.springframework.context.ApplicationEventPublisher;

import org.springframework.context.event.EventListener;

import com.vaadin.server.FontAwesome;

import com.vaadin.spring.annotation.SpringComponent;

import com.vaadin.spring.annotation.UIScope;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.CssLayout;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.themes.ValoTheme;

import eu.etaxonomy.cdm.api.application.CdmRepository;

import eu.etaxonomy.cdm.service.CdmUserHelper;

import eu.etaxonomy.cdm.vaadin.event.AuthenticationSuccessEvent;

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

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

/**

 *

 * @author a.kohlbecker

 * @since Sep 28, 2017

 *

 */

@SpringComponent("registrationToolbar")

@UIScope

public class RegistrationToolbar extends HorizontalLayout implements Toolbar {

    private static final long serialVersionUID = 2594781255088231474L;

    @Autowired

    protected ApplicationEventPublisher eventBus;

    @Autowired

    @Qualifier("cdmRepository")

    private CdmRepository repo;

    @Autowired

    protected NavigationManager navigationManager;

    @Autowired

    CdmUserHelper userHelper;

    CssLayout buttonGroup = new CssLayout();

    Button messageButton;

    Button loginButton;

    Button logoutButton;

    Button userButton;

    public RegistrationToolbar() {

    }

    @Override

    public void initialize(){

        setWidth("100%");

        buttonGroup.setStyleName(ValoTheme.LAYOUT_COMPONENT_GROUP);

        messageButton = new Button(FontAwesome.COMMENT);

        loginButton = new Button("login");

        userButton = new Button(FontAwesome.USER);

        logoutButton = new Button("logout");

        messageButton.setEnabled(false);

        logoutButton.addClickListener(e -> performLogut());

        loginButton.addClickListener(e -> performLogin());

        buttonGroup.addComponent(messageButton);

        buttonGroup.addComponent(loginButton);

        buttonGroup.addComponent(logoutButton);

        buttonGroup.addComponent(userButton);

        addComponent(buttonGroup);

        setComponentAlignment(buttonGroup, Alignment.MIDDLE_RIGHT);

        updateAuthenticationButtons();

    }

    @EventListener

    public void onAuthenticationSuccessEvent(AuthenticationSuccessEvent event){

        boolean isInitialized = userButton != null;

        // The RegistrationToolbar is being initialize even if not needed only because it is a EventListener

        // which causes Spring to initialize it.

        // TODO After switching to an other event bus this check can be removed

        if(isInitialized){

            updateAuthenticationButtons();

        }

    }

    /**

     * @param event

     */

    protected void updateAuthenticationButtons() {

        if(userHelper.userIsAutheticated() && !userHelper.userIsAnnonymous()){

            userButton.setCaption(userHelper.userName());

            userButton.setVisible(true);

            messageButton.setVisible(true);

            logoutButton.setVisible(true);

            loginButton.setVisible(false);

        } else {

            userButton.setCaption(null);

            userButton.setVisible(false);

            messageButton.setVisible(false);

            logoutButton.setVisible(false);

            loginButton.setVisible(true);

        }

    }

    /**

     * @return

     */

    private void performLogin() {

        eventBus.publishEvent(new NavigationEvent("login", navigationManager.getCurrentViewName()));

    }

    private void performLogut() {

        userHelper.logout();

        updateAuthenticationButtons();

        navigationManager.reloadCurrentView();

    }

}