/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed 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.seasar.teeda.core.util;

 import org.seasar.framework.exception.EmptyRuntimeException;

 import org.seasar.framework.util.StringUtil;

 import org.seasar.teeda.core.JsfConstants;

 /**

  * @author higa

  * 

  */

 public class EmptyElementUtil implements JsfConstants {

     private static final String[] EMPTY_ELEMENT_TAGNAMES = { BASE_ELEM,

             META_ELEM, LINK_ELEM, FRAME_ELEM, HR_ELEM, BR_ELEM, BASEFONT_ELEM,

             PARAM_ELEM, IMG_ELEM, AREA_ELEM, INPUT_ELEM, ISINDEX_ELEM, COL_ELEM };

     protected EmptyElementUtil() {

     }

     public static boolean isEmptyElement(String tagName) {

         if (StringUtil.isEmpty(tagName)) {

             throw new EmptyRuntimeException("tagName");

         }

         String name = tagName.toLowerCase();

         for (int i = 0; i < EMPTY_ELEMENT_TAGNAMES.length; ++i) {

             if (EMPTY_ELEMENT_TAGNAMES[i].equals(name)) {

                 return true;

             }

         }

         return false;

     }

 }