Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. */ package de.unioninvestment.eai.portal.support.vaadin; import static java.util.Arrays.asList; import javax.portlet.MimeResponse; import javax.portlet.PortletContext; import javax.portlet.PortletMode; import javax.portlet.PortletModeException; import javax.portlet.PortletRequest; import javax.portlet.PortletResponse; import javax.portlet.PortletURL; import javax.portlet.StateAwareResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.MessageSource; import org.springframework.web.portlet.context.PortletApplicationContextUtils; import com.vaadin.server.Page; import com.vaadin.server.VaadinPortletService; /** * Hilfsklasse fr Vaadin Portlets. * * @author carsten.mjartan */ public final class PortletUtils { private static final Logger LOGGER = LoggerFactory.getLogger(PortletUtils.class); private static org.springframework.context.ApplicationContext applicationContextMock = null; private PortletUtils() { // Utility class } /** * Gibt dem Browser die Information, zu einer alternativen Ansicht des * Portlets zu wechseln. * * @param targetMode * der Ziel-Modus * @return <code>true</code>, falls ein Wechsel erfolgen kann */ public static boolean switchPortletMode(PortletMode targetMode) { try { PortletResponse response = VaadinPortletService.getCurrentResponse().getPortletResponse(); if (response instanceof MimeResponse) { PortletURL url = ((MimeResponse) response).createRenderURL(); url.setPortletMode(targetMode); Page.getCurrent().setLocation(url.toString()); return true; } else if (response instanceof StateAwareResponse) { ((StateAwareResponse) response).setPortletMode(targetMode); return true; } else { LOGGER.error("Portlet mode can only be changed from a portlet request"); return false; } } catch (IllegalStateException e) { // not in portlet: then don't switch back return false; } catch (PortletModeException e) { // not allowed: then don't switch back return false; } } }