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.taglib.component; 021 022 import javax.servlet.jsp.tagext.TagData; 023 import javax.servlet.jsp.tagext.TagExtraInfo; 024 import javax.servlet.jsp.tagext.ValidationMessage; 025 026 /* 027 * Date: 19.04.2006 028 * Time: 10:56:39 029 */ 030 public class CommandTagExtraInfo extends TagExtraInfo { 031 private static final ValidationMessage[] EMPTY_MESSAGE = new ValidationMessage[0]; 032 033 public ValidationMessage[] validate(TagData data) { 034 Object action = data.getAttribute("action"); 035 Object onclick = data.getAttribute("onclick"); 036 Object link = data.getAttribute("link"); 037 038 if (link != null && !(action == null && onclick == null)) { 039 return generateValidationMessages(data); 040 } 041 return EMPTY_MESSAGE; 042 } 043 044 private ValidationMessage[] generateValidationMessages(TagData data) { 045 ValidationMessage[] messages = new ValidationMessage[1]; 046 messages[0] = new ValidationMessage(data.getId(), 047 "Only one Attribute of action, onclick and link is allowed"); 048 return messages; 049 } 050 }