001/* 002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Jean-Marc Orliaguet, Chalmers 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.theme.jsf.negotiation.theme; 023 024import java.util.Map; 025 026import javax.faces.context.FacesContext; 027 028import org.nuxeo.theme.Manager; 029import org.nuxeo.theme.elements.PageElement; 030import org.nuxeo.theme.negotiation.Scheme; 031 032public final class RequestParameter implements Scheme { 033 034 public String getOutcome(final Object context) { 035 final Map<String, String> parameters = ((FacesContext) context).getExternalContext().getRequestParameterMap(); 036 final String path = parameters.get("theme"); 037 final PageElement page = Manager.getThemeManager().getPageByPath(path); 038 if (page != null) { 039 return path; 040 } 041 return null; 042 } 043 044}