001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package org.apache.myfaces.tobago.util; 021 022 import javax.faces.application.Application; 023 024 public enum FacesVersion { 025 026 VERSION_11, 027 VERSION_12, 028 VERSION_20; 029 030 private static FacesVersion currentVersion; 031 032 static { 033 try { 034 Application.class.getMethod("getExpressionFactory"); 035 036 try { 037 Application.class.getMethod("getExceptionHandler"); 038 039 currentVersion = VERSION_20; 040 041 042 } catch (NoSuchMethodException e) { 043 currentVersion = VERSION_12; 044 } 045 046 } catch (NoSuchMethodException e) { 047 currentVersion = VERSION_11; 048 } 049 } 050 051 /** 052 * Does the JSF is version 1.2 or higher 053 * @return Supports 1.2 or higher 054 */ 055 public static boolean supports12() { 056 return currentVersion == VERSION_12 || currentVersion == VERSION_20; 057 } 058 059 /** 060 * Does the JSF is version 2.0 or higher 061 * @return Supports 2.0 or higher 062 */ 063 public static boolean supports20() { 064 return currentVersion == VERSION_20; 065 } 066 }