com.github.daytron.twaattin.presenter.LogoutBehaviour.java Source code

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Here is the source code for com.github.daytron.twaattin.presenter.LogoutBehaviour.java

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/*
 * The MIT License
 *
 * Copyright 2015 Ryan Gilera.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.github.daytron.twaattin.presenter;

import com.github.daytron.twaattin.ui.LoginScreen;
import com.vaadin.server.Page;
import com.vaadin.server.VaadinSession;
import com.vaadin.shared.Position;
import com.vaadin.ui.Button;
import com.vaadin.ui.Notification;
import com.vaadin.ui.UI;
import java.security.Principal;

/**
 *
 * @author Ryan Gilera
 */
public class LogoutBehaviour implements Button.ClickListener {

    private final static long serialVersionUID = 1L;

    @Override
    public void buttonClick(Button.ClickEvent event) {
        VaadinSession.getCurrent().setAttribute(Principal.class, null);

        UI.getCurrent().setContent(new LoginScreen());

        Notification logoutNotification = new Notification("You've been logout",
                Notification.Type.TRAY_NOTIFICATION);
        logoutNotification.setPosition(Position.TOP_CENTER);
        logoutNotification.show(Page.getCurrent());
    }

}