| /* |
| * 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 org.apache.taglibs.standard.examples.taglib; |
| |
| import javax.servlet.jsp.JspException; |
| import javax.servlet.jsp.JspTagException; |
| import javax.servlet.jsp.jstl.core.LoopTag; |
| import javax.servlet.jsp.tagext.TagSupport; |
| |
| /** |
| * <p>Tag handler for <odd> |
| * |
| * @author Pierre Delisle |
| */ |
| public class EvenTag extends TagSupport { |
| |
| //********************************************************************* |
| // TagSupport methods |
| |
| public int doStartTag() throws JspException { |
| LoopTag iteratorTag = (LoopTag) findAncestorWithClass( |
| this, LoopTag.class); |
| if (iteratorTag == null) { |
| throw new JspTagException("<even> must be nested within a LoopTag"); |
| } |
| |
| int count = iteratorTag.getLoopStatus().getCount(); |
| return (count % 2 == 0) ? EVAL_BODY_INCLUDE : SKIP_BODY; |
| } |
| } |