01: /*
02: * Copyright 2002,2004 The Apache Software Foundation.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: }
|