001/* 002 * (C) Copyright 2006-2007 Nuxeo SAS <http://nuxeo.com> and others 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * Jean-Marc Orliaguet, Chalmers 011 * 012 * $Id$ 013 */ 014 015package org.nuxeo.theme.jsf.negotiation.engine; 016 017import javax.faces.context.FacesContext; 018 019import org.nuxeo.theme.ApplicationType; 020import org.nuxeo.theme.Manager; 021import org.nuxeo.theme.ViewDef; 022import org.nuxeo.theme.negotiation.Scheme; 023import org.nuxeo.theme.types.TypeFamily; 024import org.nuxeo.theme.types.TypeRegistry; 025 026public final class ViewId implements Scheme { 027 028 public String getOutcome(final Object context) { 029 final String viewId = ((FacesContext) context).getViewRoot().getViewId(); 030 final TypeRegistry typeRegistry = Manager.getTypeRegistry(); 031 032 final String applicationPath = ((FacesContext) context).getExternalContext().getRequestContextPath(); 033 034 final ApplicationType application = (ApplicationType) typeRegistry.lookup(TypeFamily.APPLICATION, 035 applicationPath); 036 if (application == null) { 037 return null; 038 } 039 040 final ViewDef view = application.getViewById(viewId); 041 if (view == null) { 042 return null; 043 } 044 045 final String engineName = view.getEngine(); 046 if (engineName == null) { 047 return null; 048 } 049 050 if (Manager.getTypeRegistry().lookup(TypeFamily.ENGINE, engineName) != null) { 051 return engineName; 052 } 053 return null; 054 } 055}