de.metas.ui.web.vaadin.session.UserSession.java Source code

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Here is the source code for de.metas.ui.web.vaadin.session.UserSession.java

Source

package de.metas.ui.web.vaadin.session;

import org.adempiere.util.lang.Mutable;

import com.vaadin.server.VaadinSession;

/*
 * #%L
 * test_vaadin
 * %%
 * Copyright (C) 2016 metas GmbH
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 2 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-2.0.html>.
 * #L%
 */

public class UserSession {
    public static final UserSession getCurrent() {
        final VaadinSession vaadinSession = VaadinSession.getCurrent();
        if (vaadinSession == null) {
            return null;
        }

        if (vaadinSession.hasLock()) {
            return getCurrent(vaadinSession);
        } else {
            final Mutable<UserSession> userSessionRef = new Mutable<UserSession>();
            vaadinSession.accessSynchronously(new Runnable() {

                @Override
                public void run() {
                    userSessionRef.setValue(getCurrent(vaadinSession));
                }
            });

            return userSessionRef.getValue();
        }
    }

    private static final UserSession getCurrent(final VaadinSession vaadinSession) {
        UserSession userSession = vaadinSession.getAttribute(UserSession.class);
        if (userSession == null) {
            userSession = new UserSession();
            vaadinSession.setAttribute(UserSession.class, userSession);
        }
        return userSession;
    }

    private boolean loggedIn = false;

    private UserSession() {
        super();
    }

    public boolean isLoggedIn() {
        return loggedIn;
    }

    public void setLoggedIn(final boolean loggedIn) {
        this.loggedIn = loggedIn;
    }
}