com.morevaadin.vaadin7.springsecurity.SecuredRoot.java Source code

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Here is the source code for com.morevaadin.vaadin7.springsecurity.SecuredRoot.java

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package com.morevaadin.vaadin7.springsecurity;

/*
 * #%L
 * Vaadin 7 Spring Security Integration
 * %%
 * Copyright (C) 2012 Nicolas Frankel
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import static com.vaadin.ui.Notification.TYPE_ERROR_MESSAGE;

import org.springframework.security.authentication.BadCredentialsException;

import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.morevaadin.vaadin7.springsecurity.event.LoginEvent;
import com.morevaadin.vaadin7.springsecurity.event.LogoutEvent;
import com.morevaadin.vaadin7.springsecurity.service.AuthenticationService;
import com.morevaadin.vaadin7.springsecurity.ui.LoginView;
import com.morevaadin.vaadin7.springsecurity.ui.MainView;
import com.morevaadin.vaadin7.springsecurity.util.RequestHolder;
import com.morevaadin.vaadin7.springsecurity.util.ViewChangeSecurityChecker;
import com.vaadin.annotations.EagerInit;
import com.vaadin.navigator.Navigator;
import com.vaadin.navigator.Navigator.SimpleViewDisplay;
import com.vaadin.terminal.WrappedRequest;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Root;

@SuppressWarnings("serial")
@EagerInit
public class SecuredRoot extends Root {

    private static final String MAIN_VIEW_NAME = "main";

    private static final String LOGIN_VIEW_NAME = "login";

    private EventBus bus = new EventBus();

    private Navigator navigator;

    @Override
    protected void init(WrappedRequest wrappedRequest) {

        getPage().setTitle("Vaadin Spring Security integration example");

        SimpleViewDisplay viewDisplay = new SimpleViewDisplay();

        setContent(viewDisplay);

        navigator = new Navigator(getPage(), viewDisplay);

        navigator.addListener(new ViewChangeSecurityChecker());

        navigator.addView(LOGIN_VIEW_NAME, new LoginView(bus));
        navigator.addView(MAIN_VIEW_NAME, new MainView(bus));

        navigator.navigateTo(LOGIN_VIEW_NAME);

        bus.register(this);
    }

    @Subscribe
    public void login(LoginEvent event) {

        AuthenticationService authHandler = new AuthenticationService();

        try {

            authHandler.handleAuthentication(event.getLogin(), event.getPassword(), RequestHolder.getRequest());

            navigator.navigateTo(MAIN_VIEW_NAME);

        } catch (BadCredentialsException e) {

            Notification.show("Bad credentials", TYPE_ERROR_MESSAGE);
        }
    }

    @Subscribe
    public void logout(LogoutEvent event) {

        AuthenticationService authHandler = new AuthenticationService();

        authHandler.handleLogout(RequestHolder.getRequest());

        navigator.navigateTo(LOGIN_VIEW_NAME);
    }
}