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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.struts2.jasper.compiler.tagplugin;
19  
20  /***
21   * This interface is to be implemented by the plugin author, to supply
22   * an alternate implementation of the tag handlers.  It can be used to
23   * specify the Java codes to be generated when a tag is invoked.
24   * <p/>
25   * An implementation of this interface must be registered in a file
26   * named "tagPlugins.xml" under WEB-INF.
27   */
28  
29  public interface TagPlugin {
30  
31      /***
32       * Generate codes for a custom tag.
33       *
34       * @param ctxt a TagPluginContext for accessing Jasper functions
35       */
36      void doTag(TagPluginContext ctxt);
37  }
38