1 /*
2 * Copyright 2002,2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.apache.commons.jelly.tags.core;
17
18 import org.apache.commons.jelly.JellyTagException;
19 import org.apache.commons.jelly.TagSupport;
20 import org.apache.commons.jelly.XMLOutput;
21
22 /*** A tag which conditionally evaluates its body based on some condition
23 *
24 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
25 * @version $Revision: 155420 $
26 */
27 public class ChooseTag extends TagSupport {
28
29 private boolean blockEvaluated;
30
31 public ChooseTag() {
32 }
33
34 // Tag interface
35 //-------------------------------------------------------------------------
36 public void doTag(XMLOutput output) throws JellyTagException {
37 setBlockEvaluated(false);
38 invokeBody(output);
39 }
40
41 protected boolean isBlockEvaluated() {
42 return blockEvaluated;
43 }
44
45 protected void setBlockEvaluated(boolean blockEvaluated) {
46 this.blockEvaluated = blockEvaluated;
47 }
48 }