RiplaUIProvider.java

/*******************************************************************************
 * Copyright (c) 2012-2013 RelationWare, Benno Luthiger
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * RelationWare, Benno Luthiger
 ******************************************************************************/
package org.ripla.web.internal.services;

import org.lunifera.runtime.web.vaadin.osgi.common.CustomOSGiUiProvider;
import org.ripla.web.Constants;

import com.vaadin.server.RequestHandler;
import com.vaadin.server.ServiceException;
import com.vaadin.server.SessionInitEvent;
import com.vaadin.server.SessionInitListener;
import com.vaadin.server.UICreateEvent;
import com.vaadin.ui.UI;

/**
 * The Ripla application's UI provider. We need this UI provider for theme
 * switching.
 * 
 * @author Luthiger
 */
@SuppressWarnings("serial")
public class RiplaUIProvider extends CustomOSGiUiProvider {

	private RequestHandler requestHandler;

	/**
	 * RiplaUIProvider constructor.
	 * 
	 * @param inVaadinApplication
	 *            String
	 * @param inUiClass
	 *            Class<? extends UI>
	 * @param inRequestHandler
	 *            {@link RequestHandler}
	 */
	public RiplaUIProvider(final String inVaadinApplication,
			final Class<? extends UI> inUiClass, RequestHandler inRequestHandler) {
		super(inVaadinApplication, inUiClass);
		requestHandler = inRequestHandler;
	}

	@Override
	public String getTheme(final UICreateEvent inEvent) {
		if (SkinRegistry.INSTANCE.isInitialized()) {
			return SkinRegistry.INSTANCE.getActiveSkinService().getSkinID();
		}
		final String out = super.getTheme(inEvent);
		return out == null ? Constants.DFT_SKIN_ID : out;
	}

	@SuppressWarnings("restriction")
	@Override
	public UI createInstance(UICreateEvent inEvent) {
		inEvent.getService().addSessionInitListener(new SessionInitListener() {
			@Override
			public void sessionInit(SessionInitEvent inEvent)
					throws ServiceException {
				if (requestHandler != null) {
					inEvent.getSession().addRequestHandler(requestHandler);
				}
			}
		});
		return super.createInstance(inEvent);
	}

}