org.hip.vif.app.forum.ForumApplication.java Source code

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Here is the source code for org.hip.vif.app.forum.ForumApplication.java

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/**
This package is part of the application VIF.
Copyright (C) 2014, Benno Luthiger
    
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.hip.vif.app.forum;

import java.sql.SQLException;
import java.util.Locale;

import org.hip.kernel.exc.VException;
import org.hip.vif.app.forum.internal.VIFEventDispatcher;
import org.hip.vif.core.bom.BOMHelper;
import org.hip.vif.core.bom.Member;
import org.hip.vif.core.bom.MemberHome;
import org.hip.vif.web.components.VIFBody;
import org.hip.vif.web.interfaces.IVIFEventDispatcher;
import org.hip.vif.web.util.RoleHelper;
import org.hip.vif.web.util.VIFAppHelper;
import org.hip.vif.web.util.VIFPreferencesHelper;
import org.osgi.service.useradmin.User;
import org.osgi.service.useradmin.UserAdmin;
import org.ripla.interfaces.IAppConfiguration;
import org.ripla.interfaces.IAuthenticator;
import org.ripla.util.PreferencesHelper;
import org.ripla.web.RiplaApplication;
import org.ripla.web.interfaces.IBodyComponent;
import org.ripla.web.services.ISkin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.vaadin.annotations.Theme;
import com.vaadin.server.Page;
import com.vaadin.server.VaadinSession;

/** The forum administration application, i.e. the Vaadin servlet.
 *
 * @author lbenno */
@SuppressWarnings("serial")
@Theme(ForumApplication.DFT_SKIN_ID)
public class ForumApplication extends RiplaApplication { // NOPMD
    private static final Logger LOG = LoggerFactory.getLogger(ForumApplication.class);

    public static final String DFT_SKIN_ID = "org.hip.vif.default";
    private static final String APP_NAME = "VIF Forum";

    private VIFEventDispatcher eventDispatcher; // NOPMD

    @Override
    protected void beforeInitializeLayout() { // NOPMD
        VIFAppHelper.initializeContext();
        Page.getCurrent().setTitle(APP_NAME);

        eventDispatcher = new VIFEventDispatcher();
        try {
            VaadinSession.getCurrent().getLockInstance().lock();
            VaadinSession.getCurrent().setAttribute(IVIFEventDispatcher.class, eventDispatcher);
        } finally {
            VaadinSession.getCurrent().getLockInstance().unlock();
        }
        initializePermissions();
        super.beforeInitializeLayout();
    }

    @Override
    public void showAfterLogin(final User inUser) { // NOPMD
        // we put the user's language to the preferences, it will be set to the session in super.showAfterLogin()
        getPreferences().setLocale(getUserLocale(inUser), inUser);
        super.showAfterLogin(inUser);
    }

    private Locale getUserLocale(final User inUser) {
        try {
            final Member lMember = BOMHelper.getMemberHome().getMemberByUserID(inUser.getName());
            final Object lLanguage = lMember.get(MemberHome.KEY_LANGUAGE);
            if (lLanguage == null) {
                LOG.error("Error encountered while looking up the user's language!");
                return getLocale();
            }
            return new Locale((String) lLanguage);
        } catch (final Exception exc) { // NOPMD
            LOG.error("Error encountered while looking up the user's language!", exc);
        }
        return getLocale();
    }

    @Override
    protected IAppConfiguration getAppConfiguration() { // NOPMD
        return new IAppConfiguration() {

            @Override
            public IAuthenticator getLoginAuthenticator() { // NOPMD
                return VIFAppHelper.createLoginAuthenticator();
            }

            @Override
            public String getWelcome() { // NOPMD
                return Activator.getMessages().getMessage("LoginViewInformation.welcome.forum");
            }

            @Override
            public String getDftSkinID() { // NOPMD
                return DFT_SKIN_ID;
            }

            @Override
            public String getAppName() { // NOPMD
                return APP_NAME;
            }

            @Override
            public String getMenuTagFilter() { // NOPMD
                return "vif.forum.*";
            }
        };
    }

    @Override
    protected void initializePermissions() { // NOPMD
        final UserAdmin lUserAdmin = getUserAdmin();
        if (lUserAdmin != null) {
            try {
                RoleHelper.createRolesAndPermissions(lUserAdmin);
            } catch (SQLException | VException exc) {
                LOG.error("Error encountered while creating the OSGi roles for the VIF application!", exc);
            }
        }
        // super.initializePermissions();
    }

    @Override
    protected IBodyComponent createBodyView(final ISkin inSkin) { // NOPMD
        return VIFBody.createVIFInstance(inSkin, this, getAppConfiguration().getMenuTagFilter());
    }

    @Override
    protected PreferencesHelper createPreferencesHelper() { // NOPMD
        return new VIFPreferencesHelper();
    }

}