| /* |
| * Copyright 2002,2004 The Apache Software Foundation. |
| * |
| * 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.apache.commons.jelly.tags.define; |
| |
| import org.apache.commons.jelly.JellyTagException; |
| import org.apache.commons.jelly.TagSupport; |
| import org.apache.commons.jelly.impl.DynamicTagLibrary; |
| |
| /** |
| * An abstract base class useful for implementation inheritence. |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| * @version $Revision: 1.5 $ |
| */ |
| public abstract class DefineTagSupport extends TagSupport { |
| |
| // Implementation methods |
| //------------------------------------------------------------------------- |
| |
| /** |
| * @return the current dynamic tag library instance or throws a JellyException |
| * if one is not available |
| */ |
| protected DynamicTagLibrary getTagLibrary() throws JellyTagException { |
| TaglibTag tag |
| = (TaglibTag) findAncestorWithClass(TaglibTag.class); |
| if ( tag == null ) { |
| throw new JellyTagException( "<define:tag> must be inside <define:taglib>" ); |
| } |
| return tag.getTagLibrary(); |
| } |
| |
| } |